Results 51 to 60 of about 4,352 (102)

The flexible, the stereotyped and the in‐between: putting together the combinatory tool use origins hypothesis

open access: yesBiological Reviews, Volume 101, Issue 3, Page 1235-1254, June 2026.
ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne   +1 more
wiley   +1 more source

New Caledonian crows attend to multiple functional properties of complex tools [PDF]

open access: yes, 2013
The ability to attend to the functional properties of foraging tools should affect energy-intake rates, fitness components and ultimately the evolutionary dynamics of tool-related behaviour.
St Clair, James J H, Rutz, Christian
core   +1 more source

Behavioral Differences Between Urban and Rural American Crows (Corvus brachyrhynchos) [PDF]

open access: yes, 2017
The consequences of transforming a natural environment into a human-modified environment (i.e., urbanization) on wildlife has long been a topic of concern, but has been hampered by a lack of empirical evidence focused on animal behavior.
Montenegro, Carolina
core   +1 more source

Revisiting the predation paradox for the Wood Thrush, a declining Neotropical migrant

open access: yesEcosphere, Volume 17, Issue 6, June 2026.
Abstract Despite an increased density of mid‐trophic level predators in urban and suburban areas compared to rural areas, the survival of smaller prey animals, including the eggs and chicks of nesting songbirds, often remains relatively high in these areas.
Melanie L. Klein   +3 more
wiley   +1 more source

The status of the common crow Corvus brachyrhynchos brehm in the Great Basin [PDF]

open access: yes, 1967
Due to a lack of taxonomic and distributional information concerning the Common Crow Corvus brachryhynchos Brehm inhabiting the Great Basin of North America, Johnston (1961) in one of the most recent revisions on crows, was unable to include this area in
Richards, Gerald Low
core  

Strong between-site variation in New Caledonian crows' use of hook-tool-making materials [PDF]

open access: yes, 2016
The study was funded through a BBSRC David Phillips Fellowship (grants BB/G023913/1 and BB/G023913/2 to CR) and doctoral studentships from the BBSRC (BK), JASSO (SS), and the School of Biology, University of St Andrews (JvdW).Functional tool use requires
van der Wal, Jessica Eva Megan   +9 more
core   +1 more source

Hunting, but not outdoor recreation, modulates behavioural tolerance to human disturbance in Alpine marmots Marmota marmota

open access: yesWildlife Biology, Volume 2026, Issue 2, March 2026.
Humans are often perceived as predators by free‐living animals, and thus, even non‐consumptive human activities such as outdoor recreation may trigger behavioural and physiological responses, often with negative consequences on individual fitness and population persistence.
Friederike Zenth   +8 more
wiley   +1 more source

Evaluation of drones as a tool for multi‐species nest surveys on linear rights‐of‐way

open access: yesWildlife Society Bulletin, Volume 50, Issue 1, March 2026.
This paper examines the use of drones with infrared cameras as a tool in the detection of bird nests on linear rights‐of‐way, in comparison to standard ground‐based nest surveys. Abstract The varying application of drone use in wildlife research has expanded in recent years. With the ability to utilize a variety of different sensors (e.g., infrared [IR]
Kirsten E. Pearson   +5 more
wiley   +1 more source

Flooding and a complex predator community drive American oystercatcher nest and chick survival in Virginia

open access: yesThe Journal of Wildlife Management, Volume 90, Issue 2, February 2026.
We investigated low American oystercatcher (Haematopus palliatus) productivity in the Virginia barrier islands, which historically supported high oystercatcher reproductive success. We found that chick survival was lower than nest survival, and that management may need to adapt to address evolving threats from coastal flooding and a multi‐guild ...
Mikayla N. Call   +6 more
wiley   +1 more source

Corvus brachyurus A. E. Brehm

open access: yes, 2014
Corvus brachyurus A.E. Brehm Corvus brachyurus A.E. Brehm, 1854: 75 (Aegypten). Now Corvus rhipidurus Hartert, 1918. See Hartert and Kleinschmidt, 1901: 41; Hartert, 1918a: 7; 1918b: 361; 1918e: 21; Blake and Vaurie, 1962: 281; Dickinson, 2003: 515;
Lecroy, Mary
core   +1 more source

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