Results 201 to 210 of about 444,595 (323)

Territorial birds of prey adjust their flight behaviour over the course of the breeding season depending on their breeding success

open access: yesJournal of Avian Biology, Volume 2026, Issue 2, March 2026.
Flight plays a central role in the life histories of birds but is extremely energy demanding. Reproduction is also associated with high energy demands. We might thus expect to see differences in movement behaviour between individuals that breed successfully, those that breed unsuccessfully, and those that do not breed, assuming that individuals adapt ...
Lise Viollat   +4 more
wiley   +1 more source

[Impact of Regulation of the School Food Environment: methodological aspects and participation in the first year of follow-up]. [PDF]

open access: yesCad Saude Publica
Botelho LV   +7 more
europepmc   +1 more source

ESTROMATÓLITOS COLUNARES NA BASE DO GRUPO MACAÚBAS, NORDESTE DA SERRA DO ESPINHAÇO (MG): PALEONTOLOGIA E AMBIENTE DE SEDIMENTAÇÃO

open access: diamond, 2013
Lúcio Mauro Soares Fraga   +4 more
openalex   +2 more sources

Three decades of western sandpiper stopover dynamics during northward migration on the Pacific Coast of North America, 1992–2022

open access: yesJournal of Avian Biology, Volume 2026, Issue 2, March 2026.
Shorebirds typically spend more time fueling and refueling during migration than they spend in actual flight, and consequently their stopover ecology has important implications for fitness and conservation. We examined spatial variation and long‐term changes in stopover duration of radio‐tagged western sandpipers Calidris mauri over three decades on ...
Nils Warnock   +7 more
wiley   +1 more source

Balancing moult, migration, and breeding in a long‐lived partially migrant raptor

open access: yesJournal of Avian Biology, Volume 2026, Issue 2, March 2026.
Moult, breeding, and migration are the three major life‐history events in the annual cycle of birds. All are energetically demanding processes that rarely overlap. In large raptors such as the Egyptian vulture Neophron percnopterus, completing a full moult may take more than one year, requiring birds to balance this process with other life‐cycle events.
Iñigo Zuberogoitia   +19 more
wiley   +1 more source

Osteology of the Feeding Apparatus of Chilean Flamingo Phoenicopterus chilensis (Aves: Phoenicopteridae)

open access: yesJournal of Morphology, Volume 287, Issue 3, March 2026.
1. The skull features a broad, dorsoventrally flattened frontal region articulating with an elongated upper jaw that is complemented by the mandible's downward bend along its proximal half. 2. The low mechanical advantage in the mandible is attributed to the reduced and shallow insertion areas of the adductor muscles, which are positioned close to the ...
Oscar Aldana Ardila, Caio J. Carlos
wiley   +1 more source

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