References in periodicals archive ?
1986) showed that the distance between the central source and the caches increased with caching sequence among Black-billed Magpies, while Stapanian and Smith (1978) found no correlation between caching sequence and distance in squirrels.
Swabs were taken from the oropharynx, cloaca, or both of 109 American Crows, 31 Blue Jays, 6 Common Ravens, and 4 Black-billed Magpies from Manitoba, and 255 American Crows and 28 Blue Jays from Ontario.
American Crows also became infected after consuming a WNV-infected House Sparrow carcass (83% susceptibility, n=6); three Black-billed Magpies and a Fish Crow did not become infected after consuming infected House Sparrows or infected mice.