Results 1 to 10 of about 758 (121)

Prion remains infectious after passage through digestive system of American crows (Corvus brachyrhynchos). [PDF]

open access: yesPLoS ONE, 2012
Avian scavengers, such as American crows (Corvus brachyrhynchos), have potential to translocate infectious agents (prions) of transmissible spongiform encephalopathy (TSE) diseases including chronic wasting disease, scrapie, and bovine spongiform ...
Kurt C VerCauteren   +4 more
doaj   +5 more sources

Antigenic distribution of west nile virus in various organs of wildly infected American crows (Corvus Brachyrhynchos) [PDF]

open access: yesJournal of Global Infectious Diseases, 2011
Objective: Since its discovery in the western hemisphere in 1999, West Nile virus (WNv) has caused extensive bird mortality across North America, especially in American crows (Corvus brachyrhynchos) which are highly susceptible to WNv.
Tejbir S Sandhu   +2 more
doaj   +4 more sources

Comparative West Nile Virus Detection in Organs of Naturally Infected American Crows (Corvus brachyrhynchos) [PDF]

open access: yesEmerging Infectious Diseases, 2001
Widespread deaths of American Crows (Corvus brachyrhynchos) were associated with the 1999 outbreak of West Nile (WN) virus in the New York City region. We compared six organs from 20 crow carcasses as targets for WN virus detection.
Nicholas A. Panella   +5 more
doaj   +4 more sources

Low motivation drives poor performance of infected, anorexic crows on a string-pulling task [PDF]

open access: yesAnimal Cognition
There is growing concern that infectious disease can impair the cognitive performance of wild animals, but the mechanisms by which this may occur are unclear.
Andrea K. Townsend   +5 more
doaj   +2 more sources

Recurring Trans-Atlantic Incursion of Clade 2.3.4.4b H5N1 Viruses by Long Distance Migratory Birds from Northern Europe to Canada in 2022/2023 [PDF]

open access: yesViruses, 2023
In December 2022 and January 2023, we isolated clade 2.3.4.4b H5N1 high-pathogenicity avian influenza (HPAI) viruses from six American crows (Corvus brachyrhynchos) from Prince Edward Island and a red fox (Vulpes vulpes) from Newfoundland, Canada.
Tamiru N. Alkie   +15 more
doaj   +2 more sources

Sensitivity and specificity of monoclonal and polyclonal immunohistochemical staining for West Nile virus in various organs from American crows (Corvus brachyrhynchos) [PDF]

open access: yesBMC Infectious Diseases, 2007
Background Based on results of earlier studies, brain, heart and kidney are most commonly used for West Nile virus (WNV) detection in avian species. Both monoclonal and polyclonal antibodies have been used for the immunohistochemical diagnosis of WNV in ...
Wu Ping   +8 more
doaj   +2 more sources

American crows that excel at tool use activate neural circuits distinct from less talented individuals

open access: yesNature Communications, 2023
Tools enable animals to exploit and command new resources. However, the neural circuits underpinning tool use and how neural activity varies with an animal’s tool proficiency, are only known for humans and some other primates.
LomaJohn T. Pendergraft   +4 more
doaj   +1 more source

Niche partitioning of avian predators in northern grasslands amended by biosolids

open access: yesEcology and Evolution, 2021
Many food webs are affected by bottom‐up nutrient addition, as additional biomass or productivity at a given trophic level can support more consumers. In turn, when prey are abundant, predators may converge on the same diets rather than partitioning food
Arianna E. C. Ormrod   +3 more
doaj   +1 more source

West Nile Virus Detection in American Crows

open access: yesEmerging Infectious Diseases, 2003
A dipstick immunochromatographic assay used for West Nile virus (WNV) detection in mosquitoes was investigated for application to testing of fecal, saliva, and tissue samples from dead American Crows (Corvus brachyrhynchos).
Sarah A. Yaremych   +5 more
doaj   +1 more source

Crow Deaths Caused by West Nile Virus during Winter

open access: yesEmerging Infectious Diseases, 2007
In New York, an epizootic of American crow (Corvus brachyrhynchos) deaths from West Nile virus (WNV) infection occurred during winter 2004–2005, a cold season when mosquitoes are not active.
Jennifer R. Dawson   +8 more
doaj   +1 more source

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