Results 21 to 30 of about 158,409 (311)

Nest occupation and prey grabbing by saker falcon (Falco cherrug) on power lines in the province of Vojvodina (Serbia) [PDF]

open access: yesArchives of Biological Sciences, 2008
Research on nest occupation and prey grabbing by saker falcon (Falco cherrug) on power lines in Vojvodina (Serbia) was done in the period from 1986 to 2004.
Puzović S.
doaj   +1 more source

Whistle characterization of long-beaked common dolphin (Delphinus delphis bairdii) in La Paz Bay, Gulf of California [PDF]

open access: yesPeerJ, 2023
Long-beaked common dolphin (Delphinus delphis bairdii) distribution is limited to the Eastern North Pacific Ocean. Its whistle repertoire is poorly investigated, with no studies in the Gulf of California.
Óscar Carlón-Beltrán   +4 more
doaj   +2 more sources

Reproductive success of Common Ravens influences nest predation rates of their prey: implications for egg-oiling techniques

open access: yesAvian Conservation and Ecology, 2018
Abundance and distribution of Common Ravens (Corvus corax) have increased across western North America in recent decades, leading to conservation concern for sensitive prey species.
Brianne E. Brussee, Peter S. Coates
doaj   +1 more source

Population responses of common ravens to reintroduced gray wolves [PDF]

open access: yesEcology and Evolution, 2018
AbstractTop predators have cascading effects throughout the food web, but their impacts on scavenger abundance are largely unknown. Gray wolves (Canis lupus) provide carrion to a suite of scavenger species, including the common raven (Corvus corax). Ravens are wide‐ranging and intelligent omnivores that commonly take advantage of anthropogenic food ...
Lauren E. Walker   +6 more
openaire   +2 more sources

Evaluating the efficacy of carbachol at reducing corvid predation on artificial nests

open access: yesWildlife Society Bulletin, 2018
Nest predation often limits recovery of threatened and endangered birds, especially ground‐nesting species. Accordingly, a variety of techniques are used to reduce the impact of nest predation on listed species.
Matthew P. Brinkman   +2 more
doaj   +1 more source

Calls during agonistic interactions vary with arousal and raise audience attention in ravens

open access: yesFrontiers in Zoology, 2017
Background Acoustic properties of vocalizations can vary with the internal state of the caller, and may serve as reliable indicators for a caller’s emotional state, for example to prevent conflicts.
Georgine Szipl   +3 more
doaj   +1 more source

The spatial and temporal exploitation of anthropogenic food sources by common ravens (Corvus corax) in the Alps

open access: yesMovement Ecology, 2022
Background Anthropogenic food sources (AFSs) are widespread in human-transformed landscapes and the current scale at which they occur drives ecological change at the individual, population, and community levels.
Varalika Jain   +5 more
doaj   +1 more source

U.S. Fiction in the Age of Authenticity: Earnestness and Digital Epitexts in Leilani’s Luster

open access: yesEnthymema, 2023
This essay aims to explore the interrelation of the widespread use of digital epitextual material and the common practice, in post-postmodern U.S. fiction, to employ characters and character-narrators that share some biographical details with their ...
Virginia Pignagnoli
doaj   +1 more source

Spatio-angular Minimum-variance Tomographic Controller for Multi-Object Adaptive Optics systems [PDF]

open access: yes, 2015
Multi-object astronomical adaptive-optics (MOAO) is now a mature wide-field observation mode to enlarge the adaptive-optics-corrected field in a few specific locations over tens of arc-minutes.
Andersen, David   +5 more
core   +2 more sources

The Development of Sensorimotor Cognition in Common Ravens (Corvus corax) and its Comparative Evolution

open access: yesAnimal Behavior and Cognition, 2019
Evolution involves developmental change. Species comparisons play an important role in comparative cognition because they can uncover common patterns and shared principles in cognitive evolution.
Ivo Jacobs   +2 more
doaj   +1 more source

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