Results 91 to 100 of about 7,412 (197)

Fit for purpose? Analysis of the relationship between skull, beak shape and feeding ecology in Psittaciformes

Journal of Anatomy, EarlyView.
Psittaciformes exhibit high levels of morphological diversity, particularly in skull and beak structure, previously linked to diet and body size. Although there were some levels of significance between diet and beak shape, body mass was a much stronger co‐variate. Diet is not determining beak shape within the clade.
Shannon L. Harrison, Gregory P. Sutton, D. Charles Deeming   +2 more
wiley   +1 more source

Citizen science reveals host‐switching in louse flies and keds (Diptera: Hippoboscidae) during a period of anthropogenic change

Medical and Veterinary Entomology, EarlyView.
A study of louse flies in the United Kingdom, Isle of Man, and Ireland found 212 different interactions between Hippoboscidae and their hosts, of which 70 were previously unrecorded. No louse flies were found on aquatic species of birds. Host‐switching to gulls (Laridae) has occurred during a period in which these species have started relying on ...
Denise C. Wawman, Adrian L. Smith, Ben C. Sheldon   +2 more
wiley   +1 more source

Response of corvid nest predators to thinning: implications for balancing short- and long-term goals for restoration of forest habitat

Avian Conservation and Ecology
Forest thinning on public lands in the Pacific Northwest USA is an important tool for restoring diversity in forest stands with a legacy of simplified structure from decades of intensive management for timber production. A primary application of thinning
Joan C. Hagar, Theodore Owen, Thomas K. Stevens, Lorraine K. Waianuhea   +3 more
doaj   +1 more source

Breeding in natural nesting sites can improve the resilience of local Lesser Kestrel (Falco naumanni) populations to environmental changes

Ibis, Volume 168, Issue 2, Page 465-478, April 2026.
The identification of key habitats of threatened species and of extrinsic environmental factors that influence their resilience to human‐induced environmental changes are the foundation for the definition of conservation objectives. Using the presence and numerical abundance data collected in a long‐term survey (2000–24) of breeding colonies of Lesser ...
Maurizio Sarà, Rosario Mascara
wiley   +1 more source

Changes in the dopaminergic circuitry and adult neurogenesis linked to reinforcement learning in corvids

Frontiers in Neuroscience
The caudolateral nidopallium (NCL, an analog of the prefrontal cortex) is known to be involved in learning, memory, and discrimination in corvids (a songbird), whereas the involvement of other brain regions in these phenomena is not well explored.
Pooja Parishar, Madhumita Rajagopalan, Soumya Iyengar   +2 more
doaj   +1 more source

The Distribution and Reproductive Success of the Western Snowy Plover along the Oregon Coast - 2009 [PDF]

, 2009
From 3 April – 23 September 2009 we monitored the distribution, abundance and productivity of the federally Threatened Western Snowy Plover (Charadrius alexandrinus nivosus) along the Oregon coast.
Castelein, Kathleen J., Farrar, J. Daniel, Gaines, Eleanor P., Herlyn, Hendrik G., Lauten, David J.   +4 more
core   +1 more source

Behavioural responses of Eastern grey squirrels, Sciurus carolinensis, to cues of risk while foraging [PDF]

, 2015
Lisa Leaver University of Exeter Psychology Washington Singer Exeter Devon EX4 4QG UKArticleCopyright © 2015 Elsevier B.V. All rights reserved.Previous studies have shown that Eastern grey squirrels modify their behaviour while foraging to offset risks ...
Jayne, K, Lea, Stephen E.G., Leaver, LA
core   +1 more source

CORVID SURVEY TECHNIQUES AND THE RELATIONSHIP BETWEEN CORVID RELATIVE ABUNDANCE AND NEST PREDATION

Journal of Field Ornithology, 2001
Abstract We conducted a four-year study on the Olympic Peninsula of Washington to assess the relationship between corvid (Gray Jay [Perisoreus canadensis], Steller's Jay [Cyanocitta stelleri], American Crow [Corvus brachyrhynchos] and Common Raven [Corvus corax]) abundance and the risk of nest predation. We assessed risk of predation through the use of
John M. Luginbuhl, John M. Marzluff, Jeffrey E. Bradley, Martin G. Raphael, Daniel E. Varland   +4 more
openaire   +1 more source

Disentangling the effects of multifunctional forestry practices on the abundances of birds and their invertebrate prey

Ecological Applications, Volume 36, Issue 2, March 2026.
Abstract European forests are increasingly managed to harmonize production goals with biodiversity conservation, through practices such as retention and close‐to‐nature forestry. Forest birds may benefit from these practices, but it remains unclear how the effects of different management practices compare, and whether responses to management are driven
João Manuel Cordeiro Pereira, Sara Klingenfuß, Marco Basile, Julian Frey, Grzegorz Mikusiński, Ilse Storch   +5 more
wiley   +1 more source

A working list of meteor streams [PDF]

The list is restricted to meteor streams that do exist; included are six streams with activity near the threshold of detection by photography not related to any known comet and not shown to be active for as long as a ...
Cook, A. F.
core   +1 more source