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Showing 1 to 9 of 9 for “"corvus brachyrhynchos"”.
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Behavioral Differences Between Urban and Rural American Crows (Corvus brachyrhynchos)
… between urban and rural American crows (<em>Corvus brachyrhynchos</em>) by installing baited perches in urban and rural settings in Kittitas County, Washington. In order to observe differences in urban and rural crow behavior to approach or avoidance-oriented stimuli, perches included custom …
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The vocalizations and syringeal anatomy of the common crow, Corvus brachyrhynchos
A study of the vocalizations and syringeal anatomy of the common crow was conducted between 1964 and 1966. Intensive documentation of the sounds produced by the common crow, related to the appropriate behavioral context in which each sound occurs in the wild, was the primary objective of this …
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The Incidence and Intensity of Haematozoa in the Common Crow (Corvus brachyrhynchos) of Western Washington
… intensity of blood parasites in the common crow (Corvus brachyrhynchos). The following observations on the protozoan genera Haemoproteus, Leucocytozoon, Plasmodium and Trypanosoma with observations on the nematode group microfilaria, are based entirely on materials collected at Auburn, Washington …
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Influence of Predation on Least Tern and Piping Plover Productivity Along the Missouri River in South Dakota
… kestrels (Falco sparyerius), American crows (Corvus brachyrhynchos), raccoons (Procyon lotor), great horned owls (lma.Q yirginianus), and mink (Mustela yison) were having a significant effect on the survival of piping plover and least tern nests and chicks in this region. American crows, …
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Wild American crows use funerals to learn about danger
… Here we demonstrate that wild American crows (Corvus brachyrhynchos) are using funeral gatherings as an opportunity to engage in social learning, inform future resource use, infer novel predators, and that this behavior is not shared by another urban bird: the rock pigeon (Columba livia). Novel …
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Sentinel behaviour and urban environments: A corvid’s perspective
American crows (Corvus brachyrhynchos) are the black-clad rulers of a city’s skies and can be spotted in most North American cities. The abundance of corvids has increased with increasing urbanization, suggesting they benefit from living near humans. Recent literature shows that urbanized species …
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Effects of Harvesting Ponderosa Pine on Birds in the Black Hills of South Dakota and Wyoming
… (Picoides pubescens), American crows (Corvus brachyrhynchos), yellow-breasted chats (Icteria virens), rufous-sided towhees (Pipilo e1ythrophthalm11s), and American goldfinches (Carduelis tristis) were encountered only in harvested stands. Bird communities of ponderosa pine were altered …
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Vocal responses of Blue Jays (Cyanocitta cristata) to raptors that differ in predatory threat
… species in the corvid family, American Crows (Corvus brachyrhynchos) and Siberian Jays (Perisoreus infaustus), use referential calls to convey information about predator presence and level of threat. Because of their intelligence and flocking behavior, Blue Jays, like American Crows and …
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Piping plover habitat suitability on central Long Island, New York barrier islands
… leading cause of nest loss (300/0), and crows (Corvus brachyrhynchos and/or C. ossifragus) accounted for 71% of nests lost to predation. Probability of survival was greater for nests with predator exclosures than for nests without (64% vs. 20%). Evidence supported the hypothesis that ephemeral …