Results 41 to 50 of about 7,257 (176)

Predation Risk Does Not Delay Breeding but Reduces Nest Survival in High‐Arctic Shorebirds

Ecology and Evolution, Volume 16, Issue 3, March 2026.
We assessed the impact of arctic foxes' predation pressure on two sympatric sandpiper species. Fox activity influenced the breeding ecology of both sandpipers, with earlier nest initiations and lower nest survival rates in areas of high fox activity. ABSTRACT Understanding predator–prey interactions is crucial for correctly answering many fundamental ...
Laura Bonnefond, David Pinaud, Loïc Bollache, Thomas Pagnon, Eric Buchel, Brigitte Sabard, Vladimir Gilg, Jérôme Moreau, Olivier Gilg   +8 more
wiley   +1 more source

Factors affecting the spatial distribution and breeding habitat of an insular cliff-nesting raptor community [PDF]

, 2018
The specific spatial distribution and habitat association—strongly influenced by environmental factors or competitive interactions—are major issues in ecology and conservation.
Rodríguez, Airam, Rodríguez, Beneharo, Siveiro, Manuel, Siverio, Felipe   +3 more
core   +1 more source

Biology of the Raven Corvus corax in Sicily (Italy) [PDF]

Rivista Italiana di Ornitologia, 2016
The Raven is a resident and widespread species in Sicily. Very eclectic and ubiquitary, nests from sea level to 1600 m of altitude. Reproductive parameter, concerning 41 nests checked, are the following: productivity 1.63, breeding success 1.71, fledging rate 2.39.
openaire   +2 more sources

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

Journal 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, Aurélien Besnard, Cécile Ponchon, Alain Ravayrol, Alexandre Millon   +4 more
wiley   +1 more source

Ornithologischer Sammelbericht für den Kreis Höxter 2008/2009 [PDF]

, 2013
Der „Ornithologische Sammelbericht“ erscheint alljährlich und gibt erwähnenswerte Vogelbeobachtungen des Kreisgebietes und direkt angrenzender Bereiche wieder.
Müller, Jochen
core   +1 more source

Is caching the key to exclusion in corvids? The case of carrion crows (Corvus corone corone) [PDF]

, 2011
Recently, two corvid species, food-caching ravens and non-caching jackdaws, have been tested in an exclusion performance (EP) task. While the ravens chose by exclusion, the jackdaws did not. Thus, foraging behaviour may affect EP abilities.
Christian Schloegl, Kurt Kotrschal, Sandra Mikolasch   +2 more
core   +2 more sources

Assessing sustainable lethal take for great blue heron in the northeastern United States

Wildlife Society Bulletin, Volume 50, Issue 1, March 2026.
We used Prescribed Take Level (PTL) models to estimate sustainable take limits for great blue heron and aid depredation permitting decisions by the USFWS in the northeastern United States. The PTL models suggested that current lethal take levels are sustainable and that cumulative authorized regional take should not exceed 2,650 individuals per year ...
Eric G. LeFlore, Frank F. Rivera‐Milán, Arthur B. McCollum, Aileen Lennon, Zachary S. Ladin, Bryan M. Kluever   +5 more
wiley   +1 more source

Birds Decorating Their Nests With Plastic May Suffer Less Egg Depredation by Corvids

Ecology and Evolution, Volume 16, Issue 1, January 2026.
Many birds add anthropogenic material to the nest. We presented artificial nests on the ground in spring, each with two quail eggs and half of them decorated with pieces of white plastic. The plastic induced a neophobic response in territorial European magpies, reducing the rate of nest predation.
Tore Slagsvold, Magne Husby
wiley   +1 more source

Trophic connections of the raven in forest steppe of the Pridneprovie [PDF]

, 2001
Обыкновенный ворон (Corvus corax L.) является общепризнанным космополитом и населяет разнообразные ландшафты – от тундр Голарктики до африканских саванн.
Игнатенко, А. И., Ignatenko, A. I., Волох, Анатолій Михайлович, Волох, Анатолий Михайлович, Volokh, Anatolii   +4 more
core  

Predators and scavengers: Polar bears as marine carrion providers

Oikos, Volume 2026, Issue 1, January 2026.
Scavenging is a foraging strategy widely used across the animal kingdom and apex predators provide a large amount of energy in a food web by provisioning carrion. In the harsh environmental conditions of the Arctic, apex predators such as polar bears Ursus maritimus can provide scavenging opportunities for many species. Carrion can act as a buffer when
Holly E. L. Gamblin, Andrew E. Derocher, Evan S. Richardson, David McGeachy, James D. Roth, Nicholas W. Pilfold   +5 more
wiley   +1 more source