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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.)

Copyright of Informacion Tecnica Economica Agraria is the property of Asociacion Interprofesional para el Desarrollo Agrario (AIDA) 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.)

Copyright of Ornitologia Colombiana is the property of Asociacion Colombiana de Ornitologia 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.)

Reproduction is the biological process by which living organisms transmit their genes to their offspring. To enhance the process parental care strategies have been developed to protect the young. In the case of birds, nests provide protection to eggs and chicks, allowing the development of altricial chicks. Nests are constructed in a great variety of shapes and sizes, for example; in hummingbirds they have a compact cup shape. The Blue-throated Hummingbird (Lampornis clemenciae) (Family Trochilidae) builds its nests on a branch, protected by other hanging branches or on exposed roots in undercut banks, under housing eaves, or under bridges. The nests of this species are made with grasses, moss, plant fibers, feathers and cobwebs. On 26 September 2018 in the community of Yosocahua, Municipality of Magdalena Peñasco, Oaxaca, we observed a nest of L. clemenciae built on an aluminum can hung on a wire attached to a partition wall. One of the materials used for its construction was sheep wool. The nest contained three eggs that hatched, but the chicks fell from the nest the end of October and perished. The selection of the site where the nest was built is probably due to the availability of food and the ornamental plants adjacent to it. Its placement under the roof also likely protected it from adverse environmental conditions. [ABSTRACT FROM AUTHOR]

Studies of reproductive rate, nesting success, and reproductive productivity are useful to evaluate the population status of birds of prey. We introduce the occupation status, nest number, nesting success and productivity in three Golden Eagle nesting areas, at southeast Zacatecas. We reported the age of the members of the pair, active nests distances, and main anthropogenic land modifications. We followed the reproductive activity for four periods, between 2014 and 2017, in three areas. We observed the presence of three pairs in each area, composed of a single adult or one adult and one immature. Of the eight active nests located, five of them were successful. The average nesting success was of 33%. The nesting productivity was 0.50 fledgling/nest (including successful and failed nests). The average minimal distance between nests and the nearest modification was of 889.33 m. The nesting productivity at southeast Zacatecas is lower than other north-central regions of Mexico possibly due to age or active nest proximity to anthropogenic activities. No nests were located in a protected natural area, and their does not exist a conservation strategies for them at the moment. We encourage establishment of a natural protected area in the region. [ABSTRACT FROM AUTHOR]

Copyright of Zeledonia is the property of Asociacion Ornitologica de Costa Rica 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 Balsas Screech Owl (Megascops seductus) is an endemic owl from Mexico distributed along the Balsas river basin. It is a moderately common species within its range; however, information on its reproductive biology is insufficient. Historic records have mentioned the eggs are color white and species nests in cavities. In this note, we report a nest of Balsas Screech Owl, which was found in two consecutive years, in 2015 and 2016, at the Archaeological Zone of Xochicalco, in the state of Morelos. We describe the first nest and chick for this species, contributing to the breeding biology by describing period of nesting, egg morphology, parental care, and clutch size. [ABSTRACT FROM AUTHOR]

Copyright of Ornitologia Colombiana is the property of Asociacion Colombiana de Ornitologia 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.)

Copyright of Ornitologia Colombiana is the property of Asociacion Colombiana de Ornitologia 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 lilac-crowned parrot (Amazona finschi) is an endemic species restricted to lowlands of the Mexican Pacific coast and is currently considered as endangered. It has been documented that it shows altitudinal and seasonal migrations along its distributional range, suggesting that its ecological and temporal distribution is still uncertain. We modeled the potential distribution of the A. finschi considering the two main activity seasons for the species: reproductive and non-reproductive. We used 428 historical occurrences (1882-2014), obtained from open access databases, combined with five environmental layers: three climatic and two topographic for each season, to perform ecological niche models using Maxent. We then transferred each model to the rest of the months to analyze the seasonal movements guided by climate. Differences in ecological variables between seasons were evaluated using a t-test. The geographic correspondence among the parrot distribution and the resources (plants) distributions were analyzed by superimposing maps. A marked seasonality in the distribution of A. finschi was observed. Ecologically, the species displays greater amplitude during the breeding seasons in terms of minimum temperature, but a noticeable reduction as far as precipitation is concerned. The distribution of food and nesting resources largely corresponds to the distribution of this parrot. There is a wide area in the center of the geographical distribution in which the species finds conditions that meet both periods of activity, as well as transition conditions between these periods. Finally, our results on the seasonal variation in the geographical and ecological distribution of this species, possess a strong ecological meaning in the understanding of other species distribution, particularly those associated with highly seasonal environments, and definitively will contribute to the conservation of this species. [ABSTRACT FROM AUTHOR]

Copyright of Agro Productividad is the property of Colegio de Postgraduados 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.)

Copyright of Revista Mexicana de Biodiversidad is the property of Universidad Nacional Autonoma de Mexico, Instituto de Biologia 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.)

Copyright of Revista Colombiana de Entomología is the property of Universidad del Valle 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.)

This paper describes the nest site and nest of Asthenes modesta in the High Andes in the province of San Juan, Argentina. [ABSTRACT FROM AUTHOR]

Copyright of Boletin SAO is the property of Sociedad Antioquena de Ornitologia 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.)