Results 21 to 30 of about 1,057 (155)

A bird's eye view: using geographic analysis to evaluate the representativeness of corvid indicators for West Nile virus surveillance

open access: yesInternational Journal of Health Geographics, 2007
Background The objective of this evaluation was to determine whether reports of dead corvid sightings and submissions of dead corvids for West Nile virus testing were representative of true corvid mortality in British Columbia in 2004, a year with no ...
MacDougall Laura   +3 more
doaj   +1 more source

Function and flexibility of object exploration in kea and New Caledonian crows [PDF]

open access: yesRoyal Society Open Science, 2017
A range of non-human animals frequently manipulate and explore objects in their environment, which may enable them to learn about physical properties and potentially form more abstract concepts of properties such as weight and rigidity.
Megan L. Lambert   +6 more
doaj   +1 more source

Waste Disposal Sites as All-You-Can Eat Buffets for Carrion Crows (Corvus corone)

open access: yesAnimals, 2019
In cities and densely populated areas, several corvid species are considered nuisance animals. In Austria, particularly carrion (Corvus corone) and hooded crows (C. cornix) are regarded as pests by the general public that frequently cause damage to crops,
Doris Preininger   +3 more
doaj   +1 more source

First Description of the Mitogenome Features of Neofoleyellides Genus (Nematoda: Onchocercidae) Isolated from a Wild Bird (Pyrrhocorax pyrrhocorax)

open access: yesAnimals, 2022
The Onchocercidae family is composed of more than 30 valid nematode species with notable zoonotic potential. Current limitations in molecular characterization methods and species identification are the main obstacles to a better understanding of the ...
Tingting Wu   +8 more
doaj   +1 more source

LIBERTY FOR CORVIDS [PDF]

open access: yesPublic Affairs Quarterly, 2017
Abstract We argue that at least some corvids morally ought to be granted a right to bodily liberty in the US legal system and relevantly similar systems. This right would grant immunity to frivolous captivity and extermination. Implementing this right will require new legislation or the expansion of existing legislation including the ...
Mark Wells, Scott Simmons, Diana Klim
openaire   +1 more source

Susceptibility of Carrion Crows to Experimental Infection with Lineage 1 and 2 West Nile Viruses

open access: yesEmerging Infectious Diseases, 2015
West Nile virus (WNV) outbreaks in North America have been characterized by substantial die-offs of American crows (Corvus brachyrhynchos). In contrast, a low incidence of bird deaths has been observed during WNV epidemic activity in Europe.
Stephanie M. Lim   +9 more
doaj   +1 more source

Effects of Land Use Intensification on Avian Predator Assemblages: A Comparison of Landscapes with Different Histories in Northern Europe

open access: yesDiversity, 2019
Land use and landcover change alter the ability of habitat networks to maintain viable species populations. While their effects on the quality, amount and patterns of landcover patches are commonly studied, how they affect ecological processes, such as ...
Michael Manton   +2 more
doaj   +1 more source

Chlamydiae in corvids

open access: yesVeterinary Record, 2015
AVIAN chlamydiosis is primarily caused by the intracellular bacterium Chlamydia psittaci , belonging to the Chlamydiaceae family. Depending on the species and age of the bird and the virulence of the infectious bacterial strain, avian chlamydiosis can be subclinical or characterised by respiratory, digestive, or systemic disorders (Knittler and others ...
DI FRANCESCO, ANTONIETTA   +7 more
openaire   +4 more sources

Genetic diversity, differentiation and historical origin of the isolated population of rooks Corvus frugilegus in Iberia

open access: yesJournal of Avian Biology, 2021
Current bird populations in southern temperate latitudes often represent relicts of glacial refugia from which northern populations expanded as the climate became suitable following the last glacial maximum, 18 000 years before present.
Pablo Salinas   +5 more
doaj   +1 more source

Sex-specific effects of cooperative breeding and colonial nesting on prosociality in corvids

open access: yeseLife, 2020
The investigation of prosocial behavior is of particular interest from an evolutionary perspective. Comparisons of prosociality across non-human animal species have, however, so far largely focused on primates, and their interpretation is hampered by the
Lisa Horn   +14 more
doaj   +1 more source

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