Abstract The movement ecology of migratory Sporophila seedeaters in the Neotropics, particularly their routes and nonbreeding areas, remains poorly understood. This study aimed to fill this gap by providing a detailed description these routes, stopovers, areas using light-level geolocators on cinnamomea (Chestnut Seedeater), vulnerable species that breeds southern South America. Species distribution modelling was employed estimate probability occurrence at extremes. Over 3 breeding seasons...

The breeding traits of Sporophila seedeaters have been relatively well studied in recent years; nevertheless, a group ten species the genus, known as southern capuchinos, remain understudied. That is case with Chestnut Seedeater (Sporophila cinnamomea), vulnerable to extinction, which breeds grasslands southeast South America and, after reproduction, migrates towards Cerrado region central Brazil. Here, we investigated ecology and calculated average clutch size, productivity, sex ratio...

The Magnificent Frigatebird Fregata magnificens has a pantropical distribution, nesting on islands along the Atlantic and Pacific coasts. In Caribbean, there is little genetic structure among colonies; however, colonies off Brazil its relationship with those in Caribbean are unknown. this study, we used mtDNA microsatellite markers to infer population evolutionary history sample of F. individuals collected Brazil, Grand Connétable (French Guyana), Barbuda. Virtually all Brazilian had same...

In a natural context, many avian species exhibit the ability to assess and balance factors such as food availability, quality, energy expenditure when making foraging decisions. However, behaviours can also diverge from predictions, influenced by range of variables, including social behaviours, predation pressures, individual personalities. Chilean flamingos, popular birds native South America, remain relatively underexplored in terms their ecology interplay between environmental conditions...

Abstract In wetland ecosystems, birds play a crucial role in nutrient cycling through various activities such as excrement deposition, sediment disturbance during foraging, and utilization of mud vegetation for nesting. Particularly noteworthy are species exhibiting colonial breeding or high sociability, they can significantly influence waterbody communities act ecosystem engineers these habitats. Flamingos (Phoenicopteridae) possess all characteristics, making them potential engineers. this...

We provide the first insights on territorial behavior of Chestnut Seedeater (<em>Sporophila cinnamomea</em>), a vulnerable, migratory species inhabiting Pampas grasslands South America. Our study aims to describe and estimate territory size, calculate rates philopatry breeding dispersal, main aspects species' behavior, characterize nest sites. Over four seasons (2018–2022), we monitored 70 adult individuals across two grassland areas southern Brazil. applied Kernel Density Estimation method...

Migratory shorebirds, characterized as opportunistic species, are traversed by diverse distances in pursuit of food. A systematic review was conducted using different databases to scrutinize the diets 41 migratory shorebirds Americas. The analysis encompassed 94 documents from 1919 July 2023. Over 90% research relied on fecal and intestinal tract analysis, with only two studies employing molecular DNA analysis. Prevalent prey orders included Diptera, Coleoptera, Littorinimorpha, Decapoda,...

Abstract Assessing animal behaviour is essential for understanding their relationship with the environment and assisting in management conservation of species natural habitats, especially those that present large range distribution occupy very dynamic environments. The Chilean Flamingo ( Phoenicopterus chilensis , Aves: Phoenicopteridae) breeds temperate regions South America, going from Ecuador to south Argentina, but moves on southern coast Brazil Uruguay during non‐breeding season. To...

The Lagoa do Peixe National Park in southern Brazil is an important contranuptial site for many bird species, including Chilean Flamingos that come from Andean highlands and the South Atlantic coast, mainly during hemisphere winter, only where flamingos can be seen all year long. Despite that, information about ecology behaviour of region still scarce incomplete. With mind, we aim to construct a behavioural repertoire this population wild Flamingos, which used conservation management...

RESUMO O quero-quero Vanellus chilensis (Molina, 1782) é uma ave típica do Estado Rio Grande Sul, mas possui ampla distribuição geográfica nos campos da América sendo conhecido pelo canto imponente e pelos comportamentos relacionados com a agressividade territorialidade. Apesar de ser reconhecido como animal símbolo estado, nenhum trabalho acerca dos dessa foi desenvolvido no estado. Este teve objetivo qualificar quantificar o repertório comportamental V. chilensis. Observações foram feitas...

On 13 November 2011, an immature female White-capped Albatross Thalassarche steadi (identified using discriminant functions and molecular techniques) was found alive on a beach in the state of Rio Grande do Sul, southern Brazil. Its complete skeleton prepared deposited at Museu de Ciências Naturais da Universidade Federal Sul. Although there are previous records “Shy-type Albatrosses” - which collectively includes both Shy T. cauta Brazil, this is first record Albatross” identified to...

The purpose of the International Code Zoological Nomenclature (hereafter ‘the Code’) is to promote nomenclatural stability. If Rules are changed every tenth year or so, will have adapt each time new rules, which be a source instability. Another thing that taxonomists consider under edition acts been done, unnecessarily complicate his work, and even cause mistakes. We do not think necessary, for moment at least.

The two similar-looking species of giant petrels, the Northern Giant Petrel Macronectes halli and Southern M. giganteus, are renowned for being difficult to identify. In this paper we review offer new guidelines on identification these birds at sea, land, as dead specimens. Criteria identifying petrels available in scientific literature, especially regarding bill-tip coloration which readily differ from one another. Plumage characters, although useful discriminate species, not adequately...

Migration encompasses a persistent, directed, often seasonal, redistribution of individuals beyond or between their home ranges, but is incorrectly used to describe wide range other movement behaviours in several animal groups, including birds. Flamingos (Phoenicopteridae) are birds that frequently, not universally, classified as migratory. Nevertheless, movements performed by flamingos do seem match the scientific and ecological concept migration sensu stricto. We discuss different bird...

In this paper, we describe the skulls of Magnificent Frigatebird Fregata magnificens (Fregatidae) and Brown Booby (Sulidae) Sula leucogaster, with focus on structures associated Musculi mandibulae. We discuss results in context feeding biology two species, which feed mainly flying fish squids. Frigatebirds capture prey from just above, or below, water surface flight. The hook-shaped Apex maxillae F. can be viewed as an adaptation for grasping near surface. Boobies catch by plunging; thus,...