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Copyright of Arts for Linguistic & Literary Studies is the property of Thamar University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The monk parakeet (Myiopsitta monachus) and the Eurasian collared dove (Streptopelia decaocto) are two of the most prevalent invasive species globally due to their high dispersal ability. Since these birds were first recorded (1999 for the monk parakeet and 2013 for Eurasian collared dove) in the Mexico City Metropolitan Area (MCMA), both species have spread rapidly throughout the area. However, the impacts of global climate changes on the distribution patterns of these species remain poorly studied across the MCMA. Therefore, based on an ecological niche modeling approach, we assessed the expansion and potential invasion of both species in this megalopolis using current and future climate projections (year 2050). Our results estimated that the current suitable areas are 5564 km2 for the monk parakeet and 5489 km2 for the Eurasian collared dove, covering ~70% of the study area, suggesting a rapidly invading species, as expected. We observed a slight decrease (up to 24%) in both species in future climate scenarios, but our models estimated that the sizes of the suitable areas would remain stable. We found that the range expansion of these species in the megalopolis may be largely attributed to their propensity for jump dispersion and short-time niche expansion ability. Our findings allow for a better understanding of the factors contributing to the range expansion of the monk parakeet and the Eurasian collared dove in Mexico and can better inform the monitoring guidelines for and assessments of these invasive species. [ABSTRACT FROM AUTHOR]

Simple Summary: Early detection of the introduction and establishment of exotic species is crucial to prevent further spread and minimize negative impacts on native species, ecosystems, and agrosystems. Using citizen science and field surveys, this study documents the establishment and expansion of the Bare-eyed Pigeon, Patagioenas corensis, native to South America, on the island of Saint-Martin, the West Indies. Following its introduction about 10 years ago, the species is now expanding fast on the island, where it could compete with native bird species. First observed in coastal areas, the Bare-eyed Pigeon has progressively diversified its habitat use to exploit anthropized areas. Evidence for steady increases in both numbers and reproductive activity on the island calls for rapid management before it is too late. To that end, we strongly recommend adding the exotic Bare-eyed Pigeon to the official list of game species on Saint-Martin. Early reporting of the introduction and establishment of exotic species is of paramount importance for successful management. Here, we report the introduction and rapid spread of the Bare-eyed Pigeon, Patagioenas corensis, on the binational island of Saint-Martin, the West Indies. This range-restricted species naturally occurs in arid coastal areas of Columbia and Venezuela and nearby islands. Its introduction on Saint-Martin represents an expansion of about 1000 km beyond its established native range. Using observations recorded in eBird and results from a recent field survey, we show that since its introduction, most probably between late 2012 and early 2013, the species has expanded fast in Saint-Martin and has recently broadened its habitat to include anthropized, built areas. The expansion of Bare-eyed Pigeon on Saint-Martin and the neighboring Leeward Islands, possibly facilitated by climate change in the future, could be a threat to both native columbid species and other bird species through competition for resources. We therefore recommend that local authorities and stakeholders rapidly eradicate the species or at least prevent its further spread on Saint-Martin, possibly though listing it as a game species, while it is still possible to do so. [ABSTRACT FROM AUTHOR]

Simple Summary: The present study aimed to characterize the complete mitochondrial genome of Streptopelia decaocto (Frivaldszky, 1838) and investigated the evolutionary relationships among species within the Columbidae family. The mtDNA full sequence length of S. decaocto was 17,160 bp. The mitogenome of S. decaocto comprised 13 PCGs, 22 tRNA genes, 2 rRNA genes, non-coding regions, and a control region. Analysis of the entire mtDNA of S. decaocto revealed consistently positive AT-skew values, except for nad3, nad6, and the D-loop. Conversely the GC-skew values were consistently negative, except for nad6. These findings suggest that S. decaocto belongs to the Columbinae subfamily. In this research, the mitochondrial genome of the Streptopelia decaocto was sequenced and examined for the first time to enhance the comprehension of the phylogenetic relationships within the Columbidae. The complete mitochondrial genome of Streptopelia decaocto (17,160 bp) was structurally similar to the recognized members of the Columbidae family, but with minor differences in gene size and arrangement. The structural AT content was 54.12%. Additionally, 150 mitochondrial datasets, representing valid species, were amassed in this investigation. Maximum likelihood (ML) and Bayesian inference (BI) phylogenetic trees and evolutionary time relationships of species were reconstructed based on cytb gene sequences. The findings from the phylogenetic evaluations suggest that the S. decaocto was classified under the Columbinae subfamily, diverging from the Miocene approximately 8.1 million years ago, indicating intricate evolutionary connections with its close relatives, implying a history of species divergence and geographic isolation. The diversification of the Columbidae commenced during the Late Oligocene and extended into the Miocene. This exploration offers crucial molecular data for the S. decaocto, facilitating the systematic taxonomic examination of the Columbidae and Columbiformes, and establishing a scientific foundation for species preservation and genetic resource management. [ABSTRACT FROM AUTHOR]

The Dodo and its extinct sister species, the Solitaire, are iconic exemplars of the destructive capabilities of humanity. These secondarily terrestrial columbids became extinct within a century of their first encounter with humanity. Their rapid extinction, with little material retained in natural history collections, led 18th and some early 19th century naturalists to believe that these aberrant birds were mythological. This meant that the nomenclatural publications in which their scientific nomina were established were based on accounts written before the species became extinct. As such, no type specimens were designated for either the Dodo or the Solitaire. Our in-depth historical overview of both species and associated family-group nomina found that the nominal authority of the Dodo-based family group is not what is reported in the literature. Moreover, our detailed review of the family-group nomina based on columbid genera ensures that the current columbid family-group systematization is valid. Changing nomenclatural norms between the 19th and 20th centuries had a profound impact on Dodo nomenclature; so much so that the Dodo is an example of how pervasive nomenclatural 'ripples' can be and a warning for our current world of multiple nomenclatural codes. [ABSTRACT FROM AUTHOR]

Copyright of Acta Zoologica Lilloana is the property of Fundacion Miguel Lillo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The nervous system of a pigeon slender louse, Columbicola columbae, has been studied in greater detail. C. columbae is a permanent, obligatory, and wingless insect. The central nervous system consists of a series of ganglia that supply nerves to successive body segments. The three main ganglia in the head, protocerebrum, deutocerebrum, and tritocerebrum, are fused to form the brain or supraesophageal ganglion. The nervous system of the pigeon slender louse, C. columbae (Phthiraptera: Ischnocera), consists of a U-shaped compact cerebral ganglion, subesophageal ganglion, and three thoracic ganglia. The ventral nerve cord and subesophageal ganglion are also located in the head. The three thoracic ganglions are placed in pro-, meso-, and meta-thorax. The frontal ganglion is situated anterior to the brain at a considerable distance. [ABSTRACT FROM AUTHOR]

Plumology is being used in a variety of avian research fields such as from ecology and evolution to prey-predator relationship. However, very few systematic studies have been conducted in India using plumology. The paper compares macro- and micro-structural feathers' features from four species of family Columbidae viz. the Spotted dove (Spilopelia chinensis), Grey-fronted green pigeon (Treron affinis), Eurasian collared dove (Streptopelia decaocto) and Common pigeon (Columba livia) from different Indian localities. A morphometric analysis of the downy and contour feathers' structures of the listed species was carried out. Since the feathers were taken from significantly damaged carcasses, it was necessary to determine the pterylae of the flying feathers to which the latter belong. Morphometric features of feathers viz. calamus, rachis, vane and mounted barb length were measured. An atypical for Columbidae feature presence of villi has been observed but only for T. affinis species. The presence of typical pigmented quadrilobed nodes was noted in all Columbidae species. Pigmented and non-pigmented plain pronged nodes and plain swollen nodes were observed. The presence of three different nodes on barbules and nodes' pigmentation may be considered as key taxonomic characteristics for studied Columbidae species. The feather comparison method made it possible to identify pterylae of studied feathers. [ABSTRACT FROM AUTHOR]

Background Standardized Letters of Evaluation (SLOEs) are an important part of resident selection in many specialties. Often written by a group, such letters may ask writers to rate applicants in different domains. Prior studies have noted inflated ratings; however, the degree to which individual institutions are "doves" (higher rating) or "hawks" (lower rating) is unclear. Objective To characterize institutional SLOE rating distributions to inform readers and developers regarding potential threats to validity from disparate rating practices. Methods Data from emergency medicine (EM) SLOEs between 2016 and 2021 were obtained from a national database. SLOEs from institutions with at least 10 letters per year in all years were included. Ratings on one element of the SLOE—the "global assessment of performance" item (Top 10%, Top Third, Middle Third, and Lower Third)—were analyzed numerically and stratified by predefined criteria for grading patterns (Extreme Dove, Dove, Neutral, Hawk, Extreme Hawk) and adherence to established guidelines (Very High, High, Neutral, Low, Very Low). Results Of 40 286 SLOEs, 20 407 met inclusion criteria. Thirty-five to 50% of institutions displayed Neutral grading patterns across study years, with most other institutional patterns rated as Dove or Extreme Dove. Adherence to guidelines was mixed and fewer than half of institutions had Very High or High adherence each year. Most institutions underutilize the Lower Third rating. Conclusions Despite explicit guidelines for the distribution of global assessment ratings in the EM SLOE, there is high variability in institutional rating practices. [ABSTRACT FROM AUTHOR]

Colour aberrations are rare conditions in birds that are caused by genetic as well as environmental factors. Among the colour aberrations in birds, albino, leucism, progressive greying, brown, dilution, ino, and melanism are the best known. This report describes an observation of colour aberration in a Spotted Dove (Spilopelia chinensis suratensis) from India. It was recorded in the Deobali Jalah (an IBA site) of Nagaon district, Assam. The recorded individual exhibited a pale plumage with normal eyes and some light brown colour in some of the feathers, indicating this to be a form of dilution. The report also represents the first photographic documentation of colour aberration in Spotted Doves from Brahmaputra Valley of Assam, India. Further research is necessary to comprehend the causes of colour aberration in Spotted Doves. [ABSTRACT FROM AUTHOR]

Algeria hosts seven species of the Columbidae family, including pigeons and doves, the majority of which have been the subject of numerous studies, but none have been conducted on the Stock Dove (Columba oenas). Data on this species are still scarce, and its distribution is limited only to Kabylie in northern Algeria. Species occurrence data were collected from September 2022 to August 2023 using the point count method. However, the species was recently recorded in several new localities (20 stations) in West Algeria, at Sidi Bel Abbès and Tlemcen. All our observations were made in a semi-arid bioclimatic area at an altitude ranging between 750 and 1,216 m. Nesting sites were located on woodland and forest edges, not far from water sources, and feeding sites were located in open, natural, or agricultural environments where cereal seeds, grasses, flower buds, and young green shoots were consumed. It could also cohabit with other species of pigeons and doves. [ABSTRACT FROM AUTHOR]

The current study aimed to determine the effect of silver and chitosan nanoparticles of size 10 to 30 nm on the dead of lice in vitro and in vivo to determine the optimal time and concentration to combat chicken lice. One hundred local chickens Gallus gallus domesticus were collected from Al-Diwaniyah province and 6 species of local chicken lice were isolated: Menacanthus stramineus, Menacanthus pallidullus, Menacanthus cornutus, Goniodes gigas, Cuclotogaster heterographus and Bonomiella columbae. The results of treating lice with chitosan and silver nanoparticles at concentrations (40, 60, and 80 mg/mL) in vitro and at different periods (5, 10, 15, and 30 minutes) after treatment showed that chitosan and silver nanoparticles at a concentration of 80 mg/mL are the most effective in killing lice. The dead rate of lice reached 100% after 15 minutes of treatment with chitosan nanoparticles and 100% in the case of silver nanoparticles after 30 minutes. The results of spraying chitosan and silver nanoparticles on the body of chickens infected with lice experimentally, based on the relative therapeutic efficacy within 30 minutes, indicated that silver nanoparticles were the most effective in completely killing lice in the group treated with a concentration of 80 mg/kg after 30 minutes, where the percentage of therapeutic efficacy was 96.7%. This was followed by chitosan nanoparticles at a concentration of 80 mg/kg, and the percentage of therapeutic efficiency was 91.5%. Chitosan and silver nanocomposite have a promising effect in the elimination of lice infestation in chickens. [ABSTRACT FROM AUTHOR]

Ascaridia species are the most common nematodes infecting pigeons. The current study investigated specific identity of nematode parasites collected from domestic pigeons (Columba livia domestica) in Al-Qassim Region, Saudi Arabia. Out of 354 pigeons, 13.3 % were infected with nematode parasites. The morphological structure and genetic relationship of nematode worms were studied using conventional methods (Light and scanning electron microscopes) coupled with the newly introduced molecular method. Microscopical and ultrastructure observations showed that the present nematode worms belong to the genus Ascaridia and have all the characteristic features of Ascaridia columbae. Moreover, Random Amplifier morphometric (RAPD) PCR analysis revealed that the present A. columbae had a close identity of up to 98.3 % to Ascaridia columbae JX624729 for Cox-1 gene regions, and up to 98.3 % to Ascaridia nymphii LC057210, and Ascaridia galli EF180058 for ITS1-5.8s- ITS2 rDNA gene regions. Phylogenetic analysis supported the placement of this Ascaridia species within Ascaridiidae family with close relationships to other nematode species obtained from GenBank. Finally, our study recommends using molecular analysis in helminths identification as the main methodology for correct identification especially in closely related species. [ABSTRACT FROM AUTHOR]

The dove, the most frequently mentioned bird in the Hebrew Bible, appears in diverse contexts, spanning its appearance as an element in the narrative (as in the case of Noah's ark), and as an allegory and metaphor (as in the cryptic "sword of the dove"—twice in Jeremiah—and "the city of the dove"—Zephaniah). The dove even appears as the proper name of a prophet (or possibly of two, both named Jonah, son of Amittai). This article applies a communication perspective to better interpret some of these texts. We argue that the dove's communicative attributes, to include unique acoustics, remarkable power of flight, but primarily the trait of returning home—the basis for the use of doves as carrier pigeons—may either explain or deepen the interpretation of many of the references to the pigeon in the Bible. In this vein, a major focus of the article is on using the dove's homing ability as a key for reinterpreting the Book of Jonah. We conclude by suggesting that the dove's trait of returning and, hence, its use as envoy made it a useful symbol of the deity's presence in the world. In the Jewish reading, it became an emblem of one of the main political and eschatological themes of the Bible: the return home from exile, beginning with the exodus and return of Jacob's sons to Canaan and ending with the Eschaton. [ABSTRACT FROM AUTHOR]

We characterized naturally occurring pigeon herpesvirus (PiHV; Columbid alphaherpesvirus 1) infection in domestic pigeons in California. We retrieved and analyzed 62 pathology reports produced between 1991 and 2014 at the California Animal Health and Food Safety Laboratory System. In 56 of the cases, the diagnosis of PiHV infection was established based on histopathology, either alone (44 cases) or combined with virus isolation (VI; 8), transmission electron microscopy (TEM; 3), or PCR (1); in the remaining 6 cases, the diagnosis was established based on VI (5 cases) or TEM (1) alone. PiHV infection affected 1 system in 34, 2 in 16, and ≥3 systems in 6 cases; data were not available for the remaining 6 cases. Most commonly affected was the digestive system (55 cases), followed by the respiratory tract (5) and lymphoid system (2). The liver (39 cases), crop (17), and esophagus (14) were the organs affected most commonly. Many affected cells often bore single eosinophilic intranuclear inclusion bodies. PiHV infection was a secondary diagnosis or incidental finding in 35 cases. Most (55) cases had 1 (21), or up to 4 (34), other concurrent infections; the most common concurrent infections were pigeon circoviral infection (26), trichomonosis (24), aspergillosis (11), and colibacillosis (10).

Introduction: Avian orthoavulavirus-1 (AOAV1) has a wide host range, including domestic and wild birds. The present study aimed to identify the currently circulating AOAV1 strains from some outbreaks in some backyard pigeons in the eastern region of Saudi Arabia (ERSA). Methods: Tracheal/cloacal swabs and tissue specimens were collected from eight backyards in Al-Ahsa, ERSA, between January 2021 and March 2023. Samples were tested for the presence of AOAV1 using commercial real-time RTPCR. Part of the fusion gene was also amplified by gel-based RT-PCR, and the obtained amplicons were sequenced. Results and discussion: AOAV1 was detected in samples from the eight flocks. The retrieved sequences from samples of 6/8 pigeon backyards are reported. Phylogenetic analysis based on the obtained sequences from these backyard pigeons showed the segregation of the obtained sequences in AOAV1 genotypes VI.2.1 and VII.1.1. Clinically, nervous manifestations were dominant in pigeons infected with both genotypes. Respiratory manifestations and significantly higher overall mortality rate were induced by genotype VI.2.1. The deduced amino acid sequences of the fusion protein cleavage site (FPCS) showed that all the detected isolates belong to velogenic strains. Dierences in clinical profiles induced by the natural infection of pigeons with AOAV1 genotypes VI.2.1 and VII.1.1 were reported. The present findings highlight the potential roles of some backyard pigeons in the long-distance spread and cross-species transmission of the reported AOAVI genotypes. Further research is required to perform biotyping and pathotyping of the reported strains. [ABSTRACT FROM AUTHOR]

This article examines Ian Softley's 1997 adaptation of Henry James's 1902 novel The Wings of the Dove as a study in the representation of liminal sociocultural moments, specifically through its infusive representation of the character of Aunt Maud, played in the film by Charlotte Rampling. James's Maud is the financial centre of the narrative, a complex and contradictory weaponization of philistine convention and vulgar immorality, a collage of surfaces repeatedly described as gloss on a double-sided coin. James felt that the diffusiveness of Maud's power was the novel's structural problem, because it inhabited a liminal space where the desires of the individual coextend with the desires of the market, and thereby dislocated the centre of critique and control in the text, moving the reader further and further away from the commercial trappings of their cultural moment. The filmmakers claimed that eliminating Maud allowed them to update the novel's language, costumes, etiquette, and environment for a younger audience, but the film was dismissed as a pandering cash grab, an attempt to make Henry James a brand. In this way, the film diminishes Maud's presence but empowers her narrative agency; resituating James's brand of displacement, alienation, and loss into a liminal environment makes Maud's commercial influence so inescapable and self-reflexive that it makes the film look like one of her many enterprises. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Field Ornithology is the property of Resilience Alliance and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Avian takeoff requires peak pectoralis muscle power to generate sufficient aerodynamic force during the downstroke. Subsequently, the much smaller supracoracoideus recovers the wing during the upstroke. How the pectoralis work loop is tuned to power flight is unclear. We integrate wingbeat-resolved muscle, kinematic, and aerodynamic recordings in vivo with a new mathematical model to disentangle how the pectoralis muscle overcomes wing inertia and generates aerodynamic force during takeoff in doves. Doves reduce the angle of attack of their wing mid-downstroke to efficiently generate aerodynamic force, resulting in an aerodynamic power dip, that allows transferring excess pectoralis power into tensioning the supracoracoideus tendon to assist the upstroke--improving the pectoralis work loop efficiency simultaneously. Integrating extant bird data, our model shows how the pectoralis of birds with faster wingtip speed need to generate proportionally more power. Finally, birds with disproportionally larger wing inertia need to activate the pectoralis earlier to tune their downstroke. [ABSTRACT FROM AUTHOR]

We investigated within- and between-individual song variation and song-based neighbour-stranger discrimination in a non-learning bird species, the blue-headed wood-dove (Turtur brehmeri), which inhabits lowland rainforests of West and Central Africa. We found that songs of this species are individually specific and have a high potential for use in individual recognition based on the time–frequency pattern of note distribution within song phrases. To test whether these differences affect behaviour, we conducted playback experiments with 19 territorial males. Each male was tested twice, once with the songs of a familiar neighbour and once with the songs of an unfamiliar stranger. We observed that males responded more aggressively to playback of a stranger's songs: they quickly approached close to the speaker and spent more time near it. However, no significant differences between treatments were observed in the vocal responses. In addition, we explored whether responses differed based on the song frequency of the focal male and/or that of the simulated intruder (i.e., playback), as this song parameter is inversely related to body size and could potentially affect males' decisions to respond to other birds. Song frequency parameters (of either the focal male or the simulated intruder) had no effect on the approaching response during playback. However, we found that the pattern of response after playback was significantly affected by the song frequency of the focal male: males with lower-frequency songs stayed closer to the simulated intruder for a longer period of time without singing, while males with higher-frequency songs returned more quickly to their initial song posts and resumed singing. Together, these results depict a consistently strong response to strangers during and after playback that is dependent on a male's self-assessment rather than assessment of a rival's strength based on his song frequency. This work provides the first experimental evidence that doves (Columbidae) can use songs for neighbour-stranger discrimination and respond according to a "dear enemy" scheme that keeps the cost of territory defence at a reasonable level. [ABSTRACT FROM AUTHOR]

Members of Congress reveal their preferences on an issue, not only in how they vote, but also how they spend their time. I introduce and validate a new measure of Congressional engagement in national defense, based on the amount of time and legislative energy a member spends on defense issues. I demonstrate the utility of this index through the reexamination of two key puzzles in the literature on Congressional defense preferences: how veterans and members with military interests vote relative to their peers. Using the National Defense Engagement Index (NDEI) I find that both veterans and members who have military industry in their districts are much more likely to be engaged with defense than other members of Congress. These results help to resolve discrepancies in previous literature and suggest the benefit of investigating member engagement as a key part of research on Congressional behavior. [ABSTRACT FROM AUTHOR]

Pigeons and doves (family Columbidae) are one of the most diverse extant avian lineages, and many species have served as key models for evolutionary genomics, developmental biology, physiology, and behavioral studies. Building genomic resources for columbids is essential to further many of these studies. Here, we present high-quality genome assemblies and annotations for 2 columbid species, Columba livia and Columba guinea. We simultaneously assembled C. livia and C. guinea genomes from long-read sequencing of a single F1 hybrid individual. The new C. livia genome assembly (Cliv_3) shows improved completeness and contiguity relative to Cliv_2.1, with an annotation incorporating long-read IsoSeq data for more accurate gene models. Intensive selective breeding of C. livia has given rise to hundreds of breeds with diverse morphological and behavioral characteristics, and Cliv_3 offers improved tools for mapping the genomic architecture of interesting traits. The C. guinea genome assembly is the first for this species and is a new resource for avian comparative genomics. Together, these assemblies and annotations provide improved resources for functional studies of columbids and avian comparative genomics in general. [ABSTRACT FROM AUTHOR]

Sexual dimorphism is an import phenomenon in avian kingdom. Through this, birds maintain their reproductive life. In this regard, the birds in dove group are very diversified creatures. A critical review of a renowned book, 33 species of doves were shown pronounced sexual dimorphism. For continuing the mode of breeding status and evolutionary divergence, this write-up could enhance the future guide readers. [ABSTRACT FROM AUTHOR]

This article discusses Suzanne Pinckney Stetkevych's book, "The Cooing of the Dove and the Cawing of the Crow," which focuses on the late ¿Abb¿sid poet Ab¿ al-¿Al¿¿ al-Ma¿arr¿ and his major diwans, Saq¿ al-Zand and Luz¿m M¿ L¿ Yalzam. The book examines al-Ma¿arr¿'s evolution as a poet and analyzes his poems using performance-based and stylistics-based approaches. It provides valuable insights into al-Ma¿arr¿'s use of traditional literary conventions and his innovative approach to poetry. The author of the article praises the fresh and innovative approach of Suzanne Pinckney Stetkevych, which offers new perspectives for analyzing Arabic poetry and non-Western comparative literature. [Extracted from the article]

We studied object-location binding in pigeons using a sequence learning procedure. A sequence of four objects was presented, one at a time at one of four locations on a touchscreen. A single peck at the object ended the trial, and food reinforcement was delivered intermittently. In Experiment 1, a between-subjects design was used to present objects, locations, or both in a regular sequence or randomly. Response time costs on nonreinforced probe tests on which object order, location order, or both were disrupted revealed sequence learning effects. Pigeons encoded location order when it was consistent, but not object order when it alone was consistent. When both were consistent, pigeons encoded both, and showed evidence of object-location binding. In Experiment 2, two groups of pigeons received training on sequences where the same object always appeared at the same location. For some pigeons a consistent sequence was used while for others sequence order was randomized. Only when sequence order was consistent was object-location binding found. These experiments are the first demonstrations of strong and lasting feature binding in pigeons and are consistent with a functional account of learning.

Early reporting of the introduction and establishment of exotic species is of paramount importance for successful management. Here, we report the introduction and rapid spread of the Bare-eyed Pigeon, Patagioenas corensis, on the binational island of Saint-Martin, the West Indies. This range-restricted species naturally occurs in arid coastal areas of Columbia and Venezuela and nearby islands. Its introduction on Saint-Martin represents an expansion of about 1000 km beyond its established native range. Using observations recorded in eBird and results from a recent field survey, we show that since its introduction, most probably between late 2012 and early 2013, the species has expanded fast in Saint-Martin and has recently broadened its habitat to include anthropized, built areas. The expansion of Bare-eyed Pigeon on Saint-Martin and the neighboring Leeward Islands, possibly facilitated by climate change in the future, could be a threat to both native columbid species and other bird species through competition for resources. We therefore recommend that local authorities and stakeholders rapidly eradicate the species or at least prevent its further spread on Saint-Martin, possibly though listing it as a game species, while it is still possible to do so.

In this research, the mitochondrial genome of the Streptopelia decaocto was sequenced and examined for the first time to enhance the comprehension of the phylogenetic relationships within the Columbidae. The complete mitochondrial genome of Streptopelia decaocto (17,160 bp) was structurally similar to the recognized members of the Columbidae family, but with minor differences in gene size and arrangement. The structural AT content was 54.12%. Additionally, 150 mitochondrial datasets, representing valid species, were amassed in this investigation. Maximum likelihood (ML) and Bayesian inference (BI) phylogenetic trees and evolutionary time relationships of species were reconstructed based on cytb gene sequences. The findings from the phylogenetic evaluations suggest that the S. decaocto was classified under the Columbinae subfamily, diverging from the Miocene approximately 8.1 million years ago, indicating intricate evolutionary connections with its close relatives, implying a history of species divergence and geographic isolation. The diversification of the Columbidae commenced during the Late Oligocene and extended into the Miocene. This exploration offers crucial molecular data for the S. decaocto, facilitating the systematic taxonomic examination of the Columbidae and Columbiformes, and establishing a scientific foundation for species preservation and genetic resource management.

The Castile pigeon (Columba livia Gmelin, 1789), native to Africa and Eurasia, is widely distributed in most of Europe, western Asia, Africa and America. Columba livia was introduced to Peru by the Spanish in the 16th century. It lives in urban and rural areas; in recent decades its population has grown exponentially around the world; it is considered to be a commensal species of the human being and in some cases in the cities it colonizes, it causes damage to the infrastructure and constitutes a risk to public health. Although its origin is wild, it behaves as one of the species with the greatest interaction with humans. The increase in its population in cities has turned it into a pest species. This review describes the current state of knowledge of Columba livia populations, its possible effects on the health of the human population, public ornamentation and the analysis of its status as an invasive exotic species, five centuries after its introduction into the Peru. [ABSTRACT FROM AUTHOR]

In Brazil, the number of animals killed by vehicle collision surpasses 475 millions/year, but the actual number may be even higher since roadkill data in the country is scarce and punctual. Using a standard protocol, the project Caminhos da Fauna monitored since 2006 the avifauna roadkill in the BR-040 (RJ/MG) highway, southeastern Brazil. Here, we present a checklist of the avifauna registered during the 10-year monitoring program, including the list of roadkills, indicating threatening status at regional, national, and global levels, and the number of records/species. We registered 1,317 individuals belonging to 180 species, 21 orders, and 48 families. Another 247 individuals could not be identified. For seven families roadkills were higher than 50 individuals: Thraupidae, Cuculidae, Strigidae, Tyrannidae, Psittacidae, Columbidae, and Turdidae. The most collected species were Crotophaga ani (n = 106; Cuculidae), followed by Psittacara leucophthalmus (n = 61; Psittacidae), Piaya cayana (n = 56; Cuculidae), and Asio clamator (n = 44; Strigidae). Five species were under threat: Penelope obscura, Primolius maracana, Pteroglossus bailloni, Ramphastos vitellinus, and Sicalis flaveola. Most species were geographically widespread, while other 13 (7.2%) were endemic. Given the considerable amount of data obtained, further efforts of the same motivation in other Brazilian roads and express transportation systems should be encouraged. [ABSTRACT FROM AUTHOR]

Due to the traditional rearing conditions in Algerian farms, a broad panel of ectoparasites can infest ruminants and domestic birds. Among them, lice (Phthiraptera) could be a severe source of discomfort, disturbance, and diseases for the infested animals and cause decreased productivity and economic losses. The current study was conducted for two years and aimed to investigate ruminant and domestic bird lice diversity in northeastern Algeria and argue their veterinary importance. The entomological field investigations were conducted on various animal species, including cattle, sheep, goats, backyard chickens, turkeys, and pigeons, in six regions of northeastern Algeria. Lice were collected manually on their hosts and kept in Eppendorf containing 70% ethanol. They were then morphologically identified according to several morphological keys. Among all 4488 collected lice, five species in ruminants and ten in domestic birds were identified. The most common lice species were Bovicola caprae in goats, Haematopinus eurysternus in cattle, Menacanthus stramineus in backyard chickens, Chelopistes meleagridis in turkeys, and Columbicola columbae in pigeons. We also identified other species with various abundance such as Linognathus africanus, Bovicola ovis, Bovicola bovis, Menopon gallinae, Goniocotes gallinae, Goniodes dissimilis, Goniodes gigas, Lipeurus caponis, Cuclotogaster heterographus, and Campanulotes bidentatus s.l. The survey results suggest that lice infestations are widespread in the studied areas. Further investigation is needed to evaluate such pests' impact on overall animal health and production. [ABSTRACT FROM AUTHOR]

A new moult index, the relative duration index (RDI), was developed to quantify progress through moult using the Underhill–Zucchini model of primary avian moult, with the Laughing Dove Spilopelia senegalensis as a case study. The RDI weights individual primaries in accordance with their estimated relative moult durations in the same way that proportion feather mass grown (PFMG) weights primaries in accordance with their relative masses. A sample of 1 893 moult records of adult Laughing Doves was used to study their primary moult. Moult parameters were estimated for three moult indices: the traditional moult score (TMS), PFMG and the RDI, and for each of the 10 primaries. Comparing the moult parameter estimates of each of the three indices to their respective cumulative growth curves obtained from the progression of moult of individual primaries, PFMG had the closest fit. However, any of the three moult indices would give satisfactory results for the Laughing Dove. Laughing Doves had an estimated primary moult duration of 215 days, with mean start and end dates of 3 November and 6 June, respectively. The standard deviation parameter was 66 days, which implies a lack of synchronisation of moult in adult doves. It was hypothesised that the RDI might be an appropriate moult index for species that moult one feather at a time and for which the individual moult durations are not proportional to their mass, as seen in Laughing Doves. However, this was not the case as PFMG provided the best fit. The RDI might also prove to be an appropriate moult index for species that moult multiple feathers simultaneously during part of the moult period and these feathers grow more slowly than when fewer feathers are moulting simultaneously. [ABSTRACT FROM AUTHOR]

Seasonal changes in runoff and inundation create river-habitats that are considered key to the diversity of Amazonian bird species. However, studies on avifauna in different riverine habitats remain scarce. We used camera traps to survey the avifauna in river-created habitats along 39 km of river in the eastern Brazilian Amazon. We examined the number of bird species detected and species composition in islands and margin banks, evaluated species–area relationships in these two habitats, and examined if the most abundant bird species have differences in activity pattern between habitats. Cameras recorded 21 bird species from 13 families (Accipitridae, Ardeidae, Bucconidae, Caprimulgidae, Cathartidae, Columbidae, Cracidae, Hirundinidae, Icteridae, Scolopacidae, Thraupidae, Threskiornithidae, and Tyrannidae). Species composition did not differ between habitat types but we found a discernible area effect, explaining as much as 84% on the number of species detected across island sites. Overlaps of activity pattern of bird species were high between habitat types, but differences in activity peaks were found for Molothrus oryzivorus and Pitangus sulphuratus while examining islands and margin banks. River-created habitats are relevant to Amazonian bird diversity and studies on these habitats must be increased to better understand their value across the Amazon. [ABSTRACT FROM AUTHOR]

Birds have a diverse acoustic communication system, and the ability to recognise their own species' song from a distance facilitates complex behaviours related to mate attraction and rival deterrence. However, certain species, including doves, do not learn songs and their vocal repertoires are much simpler than those of better-studied songbirds. In these so-called non-learning birds, relatively little is known about the role that bird song plays in intra- and interspecific interactions, and how such behaviours might be acquired (inherited or learned from experience). To investigate this question, we focused on two species of African wood doves whose long-range songs are used in a territorial context. Specifically, we examined the responses of sympatric and allopatric populations of male blue-headed wood-doves (Turtur brehmeri) and tambourine doves (Turtur tympanistria) to different types of simulated territorial intrusions, i.e. playback of conspecific, congeneric, and control songs. We aimed to assess (i) whether these species, which have similar songs, respond only to their own species' song or exhibit interspecific territoriality, and (ii) if the response pattern is affected by the presence or absence of congeners in the general area. We found that both species responded strongly to playback of their own species in both sympatric and allopatric populations. In allopatry, though, male tambourine doves misdirected their response and also approached the playback of congeneric songs. Our results indicate that, in areas where the studied Turtur doves live in sympatry, they do not exhibit consistent interspecific territoriality. However, we cannot exclude the possibility that the smaller tambourine dove avoids its larger congener during the process of territory establishment. The difference in tambourine doves' response toward the song of present (sympatric) or absent (allopatric) congeners suggests that the ability to discriminate between songs of similarly singing potential competitors is acquired through earlier interactions and learning. This plasticity in response supports the misdirected aggression hypothesis, which argues that interspecific territorialism emerges as a maladaptive by-product of signal similarity. However, on an evolutionary timescale, such an ability could be considered an adaptive cognitive tool useful for resolving competing interests with congeners. [ABSTRACT FROM AUTHOR]

The combination of partisan polarization and controversial military engagements has produced contentious debates over US foreign policy in Congress. Who has been winning these debates and exerting greater influence over the development of security and defense bills, hawkish or dovish legislators? The literature offers competing answers—on the one hand, arguing that hawks enjoy policy advantages because of Congress's commitment to US hegemony and, on the other, claiming that doves gain policy openings because of shifting partisan and security conditions. To determine the influence of hawkish versus dovish legislators, we examine congressional actions on all defense spending bills from 1971 to 2016. Specifically, we track roll call votes to see which legislators enjoy the greatest support for their measures. We find that hawks have disproportionate influence over the content of defense bills, whether Republicans or Democrats are in control, and whether the United States is at war or enjoying relative peace. [ABSTRACT FROM AUTHOR]

To reduce bird collisions on wind turbines, Automatic Detection Systems have been developed to locate approaching birds and trigger turbines to slowdown to 2–3 rotations per minute (rpm). However, it is unknown whether birds can detect this reduced speed and avoid the turbine. We conducted an operant conditioning experiment on domestic doves (Streptopelia roseogrisea) and Harris's hawks (Parabuteo unicinctus) to assess their ability to discriminate between stationary and rotating miniature wind turbines, depending on the rotation speed and the contrast between the white blades and the background (only for doves for the latter). At high contrast, regardless of the speed tested, hawks were able to differentiate between the rotating and stationary turbines, while doves were not able to discriminate the slow‐rotating turbine (3 rpm) from the stationary one. The discrimination threshold increased to 8 rpm for the doves when the contrast was reduced. Our results suggest that the residual wind turbine speed of 2–3 rpm may not be detected by all bird species under all environmental conditions. Increasing the contrast between wind turbines and their environment may improve the detection of low‐speed rotation by some birds, otherwise, complete turbine shutdown should be recommended. [ABSTRACT FROM AUTHOR]

Interbreeding of related forms following anthropogenic activity can lead to genomic homogenization, contributing to decreasing biodiversity. Assessing spatiotemporal variation in the extent of introgression is important for conservation but can be expensive and logistically complex. The Rock Dove Columba livia is threatened by interbreeding with its feral conspecific and it is difficult to identify wild birds when wild, feral and mixed populations exist. Here, using British and Irish populations, I assess whether the proportion of birds with wild type plumage corresponds to distinctive head morphotypes differing between Rock Doves and feral pigeons, and whether plumage can be used to identify Rock Dove flocks and infer the extent of hybridization. I also determine whether plumage proportions have changed since a prior study was carried out in the 1960s. I show that flocks in which > 75% of individuals have wild type plumage consist of Rock Doves, as determined by head morphotype. Plumage proportions vary geographically, corroborating known genomic assessments of Scottish and Irish Rock Doves. Finally, the number of birds with aberrant plumages has increased since the 1960s, even in regions where no such birds were identified previously. This highlights the value of the Rock Dove as a current case study with which to explore the process of extinction by hybridization. [ABSTRACT FROM AUTHOR]

OBJECTIVES: Internal medicine clerkship grades are important for residency selection, but inconsistencies between evaluator ratings threaten their ability to accurately represent student performance and perceived fairness. Clerkship grading committees are recommended as best practice, but the mechanisms by which they promote accuracy and fairness are not certain. The ability of a committee to reliably assess and account for grading stringency of individual evaluators has not been previously studied. METHODS: This is a retrospective analysis of evaluations completed by faculty considered to be stringent, lenient, or neutral graders by members of a grading committee of a single medical college. Faculty evaluations were assessed for differences in ratings on individual skills and recommendations for final grade between perceived stringency categories. Logistic regression was used to determine if actual assigned ratings varied based on perceived faculty's grading stringency category. RESULTS: "Easy graders" consistently had the highest probability of awarding an above-average rating, and "hard graders" consistently had the lowest probability of awarding an above-average rating, though this finding only reached statistical significance only for 2 of 8 questions on the evaluation form (P =.033 and P =.001). Odds ratios of assigning a higher final suggested grade followed the expected pattern (higher for "easy" and "neutral" compared to "hard," higher for "easy" compared to "neutral") but did not reach statistical significance. CONCLUSIONS: Perceived differences in faculty grading stringency have basis in reality for clerkship evaluation elements. However, final grades recommended by faculty perceived as "stringent" or "lenient" did not differ. Perceptions of "hawks" and "doves" are not just lore but may not have implications for students' final grades. Continued research to describe the "hawk and dove effect" will be crucial to enable assessment of local grading variation and empower local educational leadership to correct, but not overcorrect, for this effect to maintain fairness in student evaluations. [ABSTRACT FROM AUTHOR]

Background and Aim: Avian viral diseases usually cause high economic losses because of high morbidity and mortality and poor growth. The rearing of chickens in backyards could have an important role in the spread of certain diseases, particularly those of viral origin. Infected birds might be prone to many viral infections for several reasons, including a lack of vaccination programs, the mixing of different bird species in the same location, and the close interactions of these birds with wild and migratory birds carrying various pathogens. This study aimed to conduct serological surveillance of avian encephalomyelitis virus (AEV) in some backyard chickens in the eastern region of Saudi Arabia. Materials and Methods: Serum samples (n = 368) were collected from domestic chickens reared in 10 backyards in the Eastern Province of Saudi Arabia. None of the domestic birds in these 10 backyards were vaccinated against the virus. In addition, 78 serum samples were collected from free-ranging birds belonging to Columbidae, such as pigeons and doves, in common areas near the domestic backyards. We tested these sera for specific antibodies against AEV. Results: Our results revealed seroconversion to AEV among the examined chickens (14.6%). None of the tested pigeons and doves displayed seroconversion to AEV. Conclusion: Seroconversion of these non-vaccinated birds against AEV was suggestive of a recent natural infection by this virus. Further studies with a large number of birds are required to molecularly characterize the circulating strains of this virus in this area. [ABSTRACT FROM AUTHOR]

In the book "Abstract concepts and the embodied mind: Rethinking grounded cognition," Guy Dove explores the representation of abstract concepts and challenges the traditional view of amodal theories that propose independent representation systems. He argues for a grounded or embodied theory that incorporates multimodal, multilevel, and flexible representations. The book addresses the problems of generalization, disembodiment, and flexibility in abstract concepts and proposes solutions through a comprehensive review of studies in neuroimaging, neuropsychology, cognitive linguistics, and language acquisition. While the book emphasizes the role of language in grounding abstract concepts, it does not fully consider the effects of linguistic relativity or individual differences in language experience. Overall, the book provides a unified and adequate account of grounded cognition and appeals to a wide range of readers. [Extracted from the article]

Mites belonging to the Syringophilidae family are a cosmopolitan and taxonomically diverse group of obligate and permanent parasites. These mites inhabit and reproduce within the hollow quills (calamus) of the wing, tail, and contour feathers. This study presents the first field observations of quill mites parasitising doves of the Turtur genus distributed in sub-Saharan Africa. A total of 145 host individuals from all five Turtur species (i.e., T. abyssinicus, T. afer, T. brehmeri, T. chalcospilos, and T. tympanistria) were examined during ornithological surveys conducted in Ghana, Uganda, Mozambique, and Nigeria. All examined bird species were found to be parasitised by a single oligoxenous syringophilid species, Meitingsunes tympanistria Skoracki & Dabert. Previously, this mite species had only been recorded from T. chalcospilos and T. tympanistria and from Tanzania and Togo; thus, the remaining dove species and countries of origin represent new host and locality records for this quill mite species. In our study, 20 individuals (13.8%) of the Turtur genus were infested by quill mites, with prevalence ranging from 8.8% to 24.2%. Mites were found to inhabit only the quills of wing coverts. No relationship was observed between the host body condition of two analysed host species (T. tympanistria and T. chalcospilos) and infestation by M. tympanistria. The fact that M. tympanistria exploits all representatives of the genus Turtur suggests that this mite species invaded these birds before their radiation, dating back approximately 15 Mya (Middle Miocene). [ABSTRACT FROM AUTHOR]

The nesting behavior of the Yellow-footed Green Pigeon Treron phoenicopterus was observed during its breeding season in 2021 in an urban region encompassing the Aligarh Muslim University Campus and the surrounding areas. Data were collected by searching nests in the study area. The breeding season for the species in the study sites begins in March and re-nesting is attempted even in July. A total of 31 nests were found on 24 trees belonging to eight species. The analysis of nest site characteristics revealed that Millingtonia hortensis, Azadirachta indica, and Dalbergia sissoo were the most important nest tree species, accounting for 69% of the identified nests during the study period. These findings contribute to our understanding of the nesting behavior of the Yellow-footed Green Pigeon in an urban environment and have implications for its conservation and management. [ABSTRACT FROM AUTHOR]

This article, published in the Florida Field Naturalist, explores the arthropods found on birds in Vaca Key, Monroe County, Florida. The author collected and identified different mites, such as Falculifer isodontus on Mourning Doves, Amerodectes hribari and Analges species on a Common Yellowthroat, Proctophyllodes breviquadratus and Ptilonyssus sairae on an Ovenbird, Analges allourus on a Common Myna, and Proctophyllodes hylocichlae on a thrush. The article provides valuable information about the arthropod fauna associated with these bird species in the area. It also mentions the discovery of an unidentified scatopsid, a type of black scavenger fly, on the plumage of a Common Yellowthroat. The presence of ectosymbiotic organisms on birds, including parasites and phoretic organisms, is still not well understood. The article acknowledges the contributions of various experts in identifying the organisms found and includes a list of references for further reading. [Extracted from the article]

"The Cooing of the Dove and the Cawing of the Crow" by Suzanne Pinckney Stetkevych is a comprehensive study of the poetry of Abū al-ʿAlāʾ al-Maʿarrī. The book analyzes twenty-two poems from al-Maʿarrī's collection, Saqṭ al-Zand, and provides fully vocalized Arabic and English translations. Stetkevych's analysis focuses on the performative settings and communicative intent of the poems, as well as the metapoetic imagery and analogies used by al-Maʿarrī. While the book does not explicitly discuss the philosophical or cosmological dimensions of al-Maʿarrī's poetry, it offers evidence that could contribute to further investigation in these areas. Overall, "The Cooing of the Dove and the Cawing of the Crow" is a valuable resource for anyone interested in classical Arabic poetry. [Extracted from the article]

The ruddy ground dove, Columbina talpacoti (Temminck, 1811), is reported herein as a new host for the diplotriaenid nematode Diplotriaena deliraePinto & Noronha, 1970. The host was collected in the municipality of Januária, northern region of the State of Minas Gerais, Brazil. A heavy infection wholly occupied the coelomic cavity and air sacs. The nematodes were also found in the pectoral subcutaneous tissue, an infection site hitherto unknown for these parasites. A total of 262 specimens of D. delirae was found, which surprisingly corresponded to 27% of the host carcass weight. The impacts of the heavy infection with D. delirae on overall host health and population regulation are briefly discussed. [ABSTRACT FROM AUTHOR]