Results 101 to 110 of about 747 (132)
Some of the next articles are maybe not open access.
Foraging Strategies of American White Pelicans
Behaviour, 1992AbstractForaging strategies employed by American white pelicans were studied at a riverine site in Manitoba, Canada, during the breeding season in 1985 and 1986. Six strategies were identified during both diurnal and nocturnal foraging periods. Sit-and-wait was the least common strategy (four instances). Mobile individuals were common but had low rates
Blair F. McMahon, Roger M. Evans
openaire +1 more source
The Development of Endothermy in American White Pelicans
The Condor, 1999We examined the development of endothermy in White Pelican (Pelecanus erythrorhynchos) chicks during the first 16 days after hatching, which corresponds with the age at which parent pelicans begin to cease brooding behavior. At ambient temperatures between 20 and 25°C, pelican chicks progressively increased their thermoregulatory capabilities with age;
Abraham, Christine L., Evans, Roger M.
openaire +1 more source
American White Pelicans Force Copulations with Nestlings
The Wilson Journal of Ornithology, 2007Abstract We observed 56 forced copulation (FC) events in a breeding colony of American White Pelicans (Pelecanus erythrorhynchos) in Saskatchewan, Canada during the 2005 nesting season. All FCs were directed at nestlings >21 days of age that were not continuously attended by an adult. The onset of FCs occurred in close synchrony with an unexpected late-
Christopher M. Somers +2 more
openaire +1 more source
Enteroparasites from the American White Pelican (Pelecanus erythrorhynchos) in Toluca Valley, Mexico
Journal of Wildlife Diseases, 2023We examined 82 fresh fecal samples from American White Pelican (Pelecanus erythrorhynchos) at San Pablo Autopan, Toluca Valley, central Mexico, December 2021 to April 2022. Eggs of Contracaecum spp. were observed in 100%, Capillaria spp. in two (2.5%), Strongyloides spp. in eight (9.7%), and coccidial oocysts in 12 (15%).
Celene, Salgado-Miranda +5 more
openaire +2 more sources
Brood reduction in the American white pelican (Pelecanus erythrohynchos)
Behavioral Ecology and Sociobiology, 1986American white pelicans (Pelecanus erythrorhynchos) breeding in colonies at East Shoal Lake, Manitoba, Canada exhibited a mean hatching asynchrony of 2.5 days in 2-egg clutches. This resulted in a size difference between chicks which facilitated sibling dominance, harassment and lack of food for the subordinate chick.
Kevin J. Cash, Roger M. Evans
openaire +1 more source
SUSPECTED FENBENDAZOLE TOXICITY IN AN AMERICAN WHITE PELICAN (PELECANUS ERYTHRORHYNCHOS)
Journal of Zoo and Wildlife Medicine, 2016A wild-raised, 5.0-kg male American white pelican ( Pelecanus erythrorhynchos ) of unknown age presented for routine examination at both the start and completion of a 30-day quarantine period at a zoological park. Upon physical examination, the pelican was bright, alert, and responsive and in good body condition.
Dana M, Lindemann +3 more
openaire +2 more sources
Mercury and Selenium in American White Pelicans Breeding at Pyramid Lake, Nevada
Waterbirds, 2007Abstract American White Pelicans (Pelecanus erythrorhynchos) that breed on Anaho Island, Pyramid Lake, Nevada, are potentially exposed to a variety of contaminants. Therefore, the reproductive success of this colony was monitored in 1996 and eggs, blood and feathers from nestlings, livers from adults and nestlings, regurgitated fish from nestlings, and
Stanley N. Wiemeyer +5 more
openaire +1 more source
American White Pelican Predation on Cui-ui in Pyramid Lake, Nevada
North American Journal of Fisheries Management, 2014Abstract Anthropogenic changes to the Pyramid Lake–Truckee River ecosystem in Nevada are suspected to have altered the predator–prey balance between American white pelican Pelecanus erythrorhynchos and Cui-ui Chasmistes cujus. We estimated the loss of the adult Cui-ui population to pelican predation over a 13-year period by netting and ...
G. Gary Scoppettone +3 more
openaire +1 more source
Reproductive Effects of Nest-Marking Studies in an American White Pelican Colony
Colonial Waterbirds, 1988-In 1981 and 1982 we studied the reproductive success of American White Pelicans in the Klamath Basin of northern California. We observed that reproductive success at one colony (Lower Klamath) became reduced in 1981 when we entered that colony to collect eggs for chemical analysis and to mark nests for an assessment of nesting success.
Diane E. Boellstorff +3 more
openaire +1 more source
American White Pelicans of Gunnison Island, Great Salt Lake, Utah
2020Great Salt Lake (GSL) is recognized as a site of “Hemispheric Importance” for shorebirds by the Western Hemisphere Shorebird Reserve Network. An estimated ten million birds visit GSL every year for breeding, staging, and for some species, as a wintering destination.
Ashley M. Kijowski +8 more
openaire +1 more source