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The polygyny in Pied Flycatchers has been studied for almost 40 years in two nest box networks in western Switzerland. 577 nests were monitored in Baulmes between 1980 and 2016, and 663 nests were monitored near Grandson and Concise between 1989 and 2016. The overall rate of polygyny was relatively high in Baulmes, with 27.4 % of nests, but only 7.8 % of nests in the Grandson region. The distance between two nests of the same polygynous male varied between 40 m and 860 m, with most cases between 100 and 200 m. Successive nests of the same polygynous male showed a difference in laying date between 0 and 21 days. Clutch sizes and hatching success showed little variation between monogynous and polygynous pairs. Breeding success, however, was lower in secondary polygynous pairs, especially when the male made little or no contribution to feeding. Compared to the age structure of monogynous pairs, which made up the vast majority, access to polygyny seemed to be the prerogative of males over one year old. On the other hand, most secondary polygynous pairs were composed of yearling females. [ABSTRACT FROM AUTHOR]

The article provides a summary of recent ornithological observations in Switzerland, highlighting various bird species and their nesting activities, movements, and notable sightings. It discusses the successful nesting of the Ferruginous Duck (Aythya nyroca) in western Switzerland, unexpected influxes of Reed Warblers (Acrocephalus dumetorum), and sightings of various gulls and raptors.

The article reports on a series of initiatives by the Swiss Ornithological Station, including the implementation of a project named "A New Dawn for Birds," which has successfully transformed a large land into high-quality habitats for threatened bird species. It discusses the role of technology, such as GPS transmitters, in monitoring bird migrations and improving ecological knowledge.

The article discusses the 10th Romand Meeting of Collaborators of the Romande Ornithological Center and the Swiss Ornithological Station that was held in in Yverdon-les-Bains, Switzerland on March 10, 2024. The conference covered a wide range of topics related to ornithology and bird conservation. Attendees included Samuel Wechsler from the Swiss Ornithological Station, Pierre Iseli and Christian Roulier from the Association Escale Limicoles-Agriculture.

The article focuses on recent ornithological observations in Switzerland, covering the period from February to April 2024. It highlights notable bird sightings during this time, including the first appearance of certain species in the country, such as the Red-flanked Bluetail and the Semi-collared Flycatcher. It provide valuable insights into bird migration patterns and occurrences, contributing to our understanding of avian distribution and behavior in Switzerland.

The article presents the historical journey of an ornithological collection that includes taxidermized birds, primarily from the late 19th century, and artworks created by Manfred Reichel. It underscores the importance of these specimens and illustrations in understanding the study of birds in Switzerland.

The article highlights the success of the Romande ornithology training program for the 2022-2023 cohort, emphasizing its popularity and the quality of projects undertaken. Topics include diverse initiatives aimed at bird conservation, such as habitat restoration, community engagement, and educational outreach, with participants commended for their remarkable contributions.

Août a été marqué par l'arrivée inattendue de plusieurs groupes de Cormorans pygmées Microcarbo pygmaeus en Suisse romande, qui se sont établis durablement aux Grangettes VD, à Verbois GE et à Chavornay VD. À l'aube du 9 août, une troupe de 11 individus a été découverte au repos à l'embouchure du Mujon, à Yverdon-les-Bains VD, puis 13 ont été vus sur le Rhône de Verbois GE. Le lendemain, 10 individus étaient à Chavornay. La première observation sur le Léman, d'un individu isolé aux Grangettes, a eu lieu une semaine plus tard, le 16 août et, le même jour, un autre a été vu au Chablais de Cudrefin VD. Dès ce moment, les Cormorans pygmées sont devenus de plus en plus nombreux à l'extrémité orientale du Léman, leur nombre culminant à 13 individus dès le 17 septembre. [ABSTRACT FROM AUTHOR]

The Swiss Rarities Committee (Swiss RC) is an independent organisation whose main goal is to ensure a sufficient documentation of unusual ornithological observations in Switzerland such that they can be used in scientific literature and research. The committee is a member of the Association of European Records and Rarities Committees, AERC, and follows the AERC's guidelines. The Swiss RC also evaluates the taxonomy and systematics applied for the birds of Switzerland and recommends that from 2024 onwards, the « IOC World Bird List » be followed instead of the « HBW and BirdLife Taxonomic Checklist ». In line with developments on other ornitho portals, the Swiss Ornithological Institute will adopt this recommendation and implement it accordingly. [ABSTRACT FROM AUTHOR]

The article provides information on the 7th International Conference on Swifts, held in Trieste, Italy, from May 29 to June 1, 2024, organized by the Liberi di Volare association. Notable presentations included discussions on swift migration and conservation strategies, with contributions from leading experts like Professor Susanna Åkesson and Terry Townshend.

The article focuses on excursions organized by Nos Oiseaux from May to October 2023, detailing ornithological outings led by various guides across different locations in Switzerland. The topics include sightings of multiple bird species during these excursions, including encounters with diverse bird species such as the Garden Treecreeper, Bonelli's Warbler, and Hawfinch, among others, and observing the behaviors and habitat of these birds in their natural environments.

The article informs about the 109th meeting General Assembly of Nos Oiseaux was held in a small committee at the Multipurpose Hall of the Cité Universitaire de Neuchâtel, which mentions transfers related to the renovation of the Common Terns rafts in Verbois, which financed by the Geneva Industrial Services Environment Fund (SIG). It mentions that birds behavior and migration are available to be placed on the rehabilitated sites presented the activities of the young ornithologists.

The article shares highlights from the 8th meeting of employees of the Centrale ornithologique romande and the Swiss ornithological station. Topics include Groupe Ornithologique du Bassin Genevois (GOBG) has the mission of studying and protecting birds in the Geneva region, as well as raising public awareness of the cause of the local avifauna; and Cantonal Office for Agriculture and Nature has managed conservation programs for several sensitive and priority species to promote biodiversity.

The article focuses on Ornithological chronicle in French-speaking Switzerland with from the digitization of the world affects ornithology statistical analysis. Topics include biological and stems from the presence or absence of a species with its behavior; and observation processes for Monitoring of Widespread Breeding Birds with complicate data analysis.

The article focuses on the centenary celebration of the Swiss Ornithological Station, including events such as an international ornithological symposium, open house days, and the publication of commemorative books.

The article informs that regular rainfall, violent storms leading to the destruction of crops by hail or flooding as in Cressier NE, major flooding of the sub-Jura lakes, had direct consequences on Ornithological chronicle for inhabitants of French-speaking Switzerland with Spring-summer and nesting 2021. It mentions about meteorological conditions of a year and specific events migratory blockages that influence the success of reproduction that marked presence of Cisticola juncidis.

Début d'une nouvelle phase du Projet Balbuzard de Nos Oiseaux, l'année 2021 a enregistré plusieurs avancées. Le retour de quatre mâles a été certifié, l'un d'entre eux formant pour la première fois un couple en Suisse. Trois femelles ont été confirmées de retour en Europe, dont deux se sont reproduites avec succès, l'une en France et l'autre en Allemagne. Trois « matinées Balbuzard » ont permis le contrôle de nombreux sites favorables à la pêche, et cinq nouvelles plateformes de nidification ont été installées. [ABSTRACT FROM AUTHOR]

Le Valais est l'une des régions les plus septentrionales où le Venturon montagnard hiverne régulièrement, mais ce phénomène reste mal connu. Grâce à des prospections ciblées durant deux hivers et aux données de tiers transmises à la Station ornithologique suisse, ces modalités d'hivernage peuvent être précisées et comparées avec les observations historiques. [ABSTRACT FROM AUTHOR]

The article offers several ornithology studies of different species of birds. Topics include Common Quail (Coturnix coturnix) found at Meinier, Geneva with peak attendance at the end of June; and Ruddy Duck (Oxyura jamaicensis), who goes into flight from Fanel, Canton de Berne with some species of Canada Goose (Branta canadensis).

The article presents overview of ornithological news from November 2021 to January 2022. Topics include prolonged stay of a Great Skua (Catharacta skua), from December 16 on Lake Bienne, then from January 28, 2022 on that of Neuchâtel with return of prestigious wintering birds also delighted observers and the Oriental Dove (Streptopelia orientalis) at Sulgen; and whiskered Lusciniole (Acrocephalus melanopogon) frequented the reedbed of Yvonand VD in lower regions of French-speaking Switzerland.

The article reports that ornithological news for the Pallid Swift Apus pallidus settles north of the Alps in the center of Geneva. Topics include Persian bee-eater Merops persicus landed on Spotted Clamator glandarius; and subject to approval by the Swiss Avifauna Commission (CAvS) for Red-necked Phalarope fulicarius for white Platalea leucorodia and Plegadis falcinellus.

The article offers overview of ornithological news from May to July 2021 published subject to approval by the Commission de l'avifaune suisse or the le Comité d'homologation national. Topics include the nesting of a pair of nyrocas Aythya nyroca at Lac de Sauvabelin/Lausanne VD; sight of Isolated monk vultures Aegypius monachus on May 9, 2021 while death of an immature Pale Harrier Circus macrourus; and sight of a white Spoonbill Platalea leucorodia on at Salavaux, Switzerland.

The article offers a report published in the journal, :Ornithol. Beob" in 2021 from the Station ornithologique suisse on bird species breeding in Switzerland. It mentions that most of the birds feed almost exclusively on insects and others have a mixed diet, and feed their young mainly with insects, such as the Chaffinch Fringilla coelebs. It also mentions that Red Kite is on the rise: its numbers have more than tripled in Switzerland over the past twenty years.

Pour la première fois en Suisse, une Fauvette de Moltoni Sylvia subalpina a été découverte le 24 avril à Locarno TI. Il s'agissait d'un mâle chanteur de ce taxon autrefois considéré comme sous-espèce italienne de la Fauvette passerinette. L'Aigle de Bonelli Aquila fasciata, échappé de captivité depuis 2010, était toujours présent dans les Franches-Montagnes JU, mais un autre individu, une femelle équipée d'une balise en 2019 dans l'Aude F, a traversé la Suisse à l'occasion d'un périple européen. Bien qu'elle n'ait pas été observée, elle est le premier Aigle de Bonelli sauvage dont la présence ait été attestée en Suisse. Dans le même registre, un Aigle impérial Aquila heliaca immature, muni d'une balise en Autriche, a frôlé la Suisse près de Bâle, après avoir fait une incursion jusqu'à la façade atlantique française. [ABSTRACT FROM AUTHOR]

The article discusses A new round of projects in favor of birds in French-speaking Switzerland, which includes the result of a long-standing partnership between Bird Life Switzerland and Nos Oiseaux, the Formation Romande en ornithology offers a complete introduction to world of ornithology. Two projects additional were subject to an extension until summer 2021 due to the health situation and will be presented in a future edition.

The article discusses Ornithological chronicle in Romandie: spring-summer and nesting in 2020, which includes a Mediterranean air blows over Switzerland. Like very regularly in recent years, most months show a surplus significant thermal. Winter 2019-2020 was thus the second mildest since the start of measures and the spring of 2020 the third, these records repeatedly are undoubtedly one of the markers of the warming of the weather.

The article discusses Overview of recent ornithological news: November 2020 to January 2021, which includes Winter 2020-2021 was marked by stays extended unpublished as well as by the return of prestigious guests: the first Tourterelle oriental, Streptopelia oriental is for Switzerland returned from November 23 to winter in the same garden as in 2019-2020 at Sulgen TG.

Le passage automnal des rapaces a forgé la réputation du défilé de l'Écluse, site par lequel transitent un grand nombre d'espèces (170 identifiées jusqu'en 2019). Si toutes n'ont pas été dénombrées régulièrement, 17 l'ont été de manière suffisante pour présenter l'évolution au cours des 27 dernières années. Elles font l'objet de ce second bilan. [ABSTRACT FROM AUTHOR]

Parmi les observations qui ont marqué l'année 2019 figurent les premières données en Suisse du Chevalier à pattes jaunes Tringa flavipes, du Traquet isabelle Oenanthe isabellina et du Moineau espagnol Passer hispaniolensis, la 2e de la Rousserolle des buissons Acrocephalus dumetorum, les 3e de la Mouette atricille Larus atricilla et du Pouillot de Hume Phylloscopus humei, les 4e du Pipit à dos olive Anthus hodgsoni et du Chevalier grivelé Actitis macularius, des 7e et 8e depuis 1992 du Cochevis huppé Galerida cristata et la 10e du Chevalier bargette Xenus cinereus. 2019 a été marquée par de forts afflux de Pouillots à grands sourcils Phylloscopus inornatus, de Mésanges à longue queue présentant les caractères de la sous-espèce Aegithalos caudatus caudatus et de Gobemouches à collier Ficedula albicollis. En complément, un afflux record de Sizerins flammés présentant les caractères de la sous-espèce Acanthis flammea flammea en hiver 2017-2018 a été examiné. [ABSTRACT FROM AUTHOR]

The article provides an overview of the report of the Central ornithological Romande from autumn 2019 and winter 2019-2020. It mentions that cyclical variations and the fruits of chance are often the ingredients of changes in our avifauna from year to year. It also mentions that Stock Dove Columba oenas, the Water Rail Rallus aquaticus, Red Kite Milvus milvus and Tarier shepherd Saxicola torquatus have never been so numerous in the bad season.

The article offers reflections on the activities that have affected the Swiss Ornithological Institute. Topics include a conservation project of the Ornithological Station which promotes the presence of the Pouillot whistler in forests; a research by Susi Jenni-Eiermann according to which chicks of Gray Partridge Perdix hatching in summer take fast; and a program of Federal Department of Defense to reconcile the Lulu Lullula Arborea habitat diversity.

The article presents a report on a rare very dark morph juvenile Longtailed Skua Stercorarius longicaudus from Lake Geneva, Switzerland. It states that the bird was found dead in Lake Geneva on October 5, 2016 and since then its preserved in the natural history museum of Geneva. The features of the bird are being discussed here.

The article presents a report on the ornithological events held in Switzerland between February 2020 and April 2020. It states that the events were very pleasing for the bird watchers as they waited long for it during the coronavirus pandemic. It also mentions about the places like Geneva, and Lake Murten where the watchers could enjoy the sight of various birds.

The article presents a report on the evolution of nesting avifauna Grangettes marshy site in Leman, Vaud, Switzerland. It mentions about the management and revitalization of the marshes of this region for housing the birds. It also mentions about its natural values and the revitalization measures that have been taken here.

Heavy snowfall during the winter 2017-2018 together with expansion of Red-billed Chough beyond its breeding area no doubt favorised the wintering of two individuals at Bex (canton of Vaud) at 440-530 m. They were observed between 15 December and 19 March and also seen regularly the following winter (5 January-21 March) in pastures with scattered cow pads. In view of the fact that on some occasions they were not present and from other observations it is likely that other sites were visited within the neighbourhood. [ABSTRACT FROM AUTHOR]

Ornithological highlights of the year 2018 include the first Long-tailed Shrike Lanius schach for Switzerland, the second records of Sooty Shearwater Ardenna grisea and Saker Falcon Falco cherrug, the third record of Pallas's Leaf-warbler Phylloscopus proregulus, the ninth records of Manx Shearwater Puffinus puffinus and Terek Sandpiper Xenus cinereus as well as the tenth record of Pine Bunting Emberiza leucocephalos. Finally, the biggest-ever influx of Rosy-coloured Starling Pastor roseus with no less than 43 records and at least 155 different birds will certainly remain as one of the unforgettable ornithological highlights of the year 2018. At the end of 2018, the Swiss list comprised 416 species in categories A, B (birds of wild origin) and C (introduced species), 409 of which have been recorded since 1900. Eight species of uncertain origin remain in category D (doubtful origin). In the text, the three figures after the German and scientific names refer to the number of records/individuals, 1900 - 1991, 1992 - 2017 and in 2018, respectively. The species are listed systematically, and within species records are listed in alphabetic order of cantons and by date. Detailed information is given as follows : location, date(s), number of individuals (one individual if not specified), age and sex if known, available documentation (photographs, video, audio recordings, skins) and in brackets the name(s) of the observer(s). [ABSTRACT FROM AUTHOR]

The article focuses on the practical and theoretical examinations of the Romande Ornithology Training (FRO) held in October 2023, congratulating the newly certified ornithologists and training, offered since 2011, includes Level 1 with 9 theoretical courses and 8 field trips.

The article focuses on the shift in the usage of geographical names in ornithological databases and publications, favoring Germanic toponyms over French ones. It highlights the need to reintroduce French designations for various localities, ensuring the preservation of linguistic diversity and heritage, specifically addressing this change in forthcoming observations reports from 2024 onward.

The article reports on the location of a nest and density of the Cinclus plunger in Switzerland. In the spring of 2018, a pair of Cincles built their nest suspended from a falling branch, just above the channeled Broye, in a situation exposed to the view and the weather. It housed a successful reproduction.

The article presents reflections of main activities and events that have affected the Birding Station in recent months in Switzerland. For four years, bird populations have been surveyed throughout Switzerland for the station's new breeding bird atlas ornithological. More than 2,000 volunteers have crisscrossed the country in all directions for the largest ornithological field project ever carried out in Switzerland.

The article discusses the activities of the French Society for the Study and Protection of Birds and discusses its balance sheets and member activities.

The article focuses on a report released by the Centrale ornithologique romande on the bird nesting in spring and summer season in 2018. Topics discussed include bird species in 19th century, discovery of Gyps fulvus vulture, bird invasion in Switzerland, nesting of bird species and ornithology of birds.

The article focuses on presence of different birds at different cities of Switzerland from August to October 2020. It mentions that Pale Swift (Apus pallidus) has been photographed October 29, 2020 in Geneva. It also mentions that Eurasian Spoonbill (Platalea leucorodia) has stopped October 21,2020 at Chablais de Cudrefin.

The article informs about offers birds and nature conservation briefs. Topics include French-speaking training in ornithology of BirdLife and Nos Oiseaux took place on September 23 and 24, 2022 in La Sauge for a remedial examination; and Branch of the Swiss Ornithological Station in Yverdon-les-Bains with forces in the service of the protection of birds and nature in abundance of food deposited in the area.

The article focuses on contrasting evolution of Yellowhammer Emberiza citrinella and Cirl Bunting Emberiza cirlus at Champagne VD, Switzerland. It mentions that in a sector of Champagne Cirl Bunting has increased its numbers remarkably since 2014 while Yellowhammer which had been much more abundant at the beginning of the studies underwent a catastrophic reduction after 2017.

The article provides an overview of recent ornithological news from May to July 2020 in Switzerland. Topics include Talève sultane Porphyrio porphyrio of wild origin and the third Roseate Tern Sterna dougallii for Swiss was discovered on June 27 in Chavornay; female of Common Eider Somateria mollissima gave birth to 2 ducklings on June 5 at Les Grangettes; and Monk Vultures Aegypius monachus were seen from June 21 in Boltigen.

The article informs about awakening, migration and behavior of Birds throughout French-speaking Switzerland, and guided by passionate ornithologists. It mentions that the common blackbird, house robin and black redstart offering the opportunity for many bird species with the help of Ornithological and Natural Sciences research.