Results 201 to 210 of about 15,406 (254)
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Polyterritorialitytion in passerine birds
Trends in Ecology & Evolution, 1989In some birds, males defend two spatially separated territories and attract females to each one in turn. it has been proposed that this behaviour, referred to as polyterritoriality, allows males to conceal their marital status, thereby deceiving females into accepting polygyny against their best interests.
H, Temrin, A, Arak
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Physical Examination of Passerines
Veterinary Clinics of North America: Exotic Animal Practice, 1999A physical examination of a passerine incorporates the same basic techniques used for other avian species. Although frequently a concern for practitioners, the small size of many of these patients can be overcome with a few technical and equipment modifications.
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Lead shot toxicity to passerines
Environmental Pollution, 2001This study evaluated the toxicity of a single size 7.5 lead shot to passerines. No mortalities or signs of plumbism were observed in dosed cowbirds (Molothrus ater) fed a commercial diet, but when given a more natural diet, three of 10 dosed birds died within 1 day.
N B, Vyas, J W, Spann, G H, Heinz
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Molecular Ecology, 2006
AbstractWe present a predicted passerine genome map consisting of 196 microsatellite markers distributed across 25 chromosomes. The map was constructed by assigning chromosomal locations based on the sequence similarity between 550 publicly available passerine microsatellites and the draft chicken genome sequence published by the International Chicken ...
Deborah A, Dawson +6 more
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AbstractWe present a predicted passerine genome map consisting of 196 microsatellite markers distributed across 25 chromosomes. The map was constructed by assigning chromosomal locations based on the sequence similarity between 550 publicly available passerine microsatellites and the draft chicken genome sequence published by the International Chicken ...
Deborah A, Dawson +6 more
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MOUTHSPOTS OF PASSERINE NESTLINGS
Ostrich, 1976Summary Maclean, G. L. & Vernon, C. J. 1977. Mouthspots of passerine nestlings. Ostrich 48:95-98. Among passerine families a pattern of black spots in a yellow mouth occurs universally only in the Sylviidae and the Alaudidae. The conservative configuration of these spots seems to indicate a true relationship between the warblers and the larks, and the ...
G. L. Maclean, C. J. Vernon
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Morphological Consequences of Migration in Passerines
2003Migration, like any other ecological factor, shapes the morphology of birds. Most ecomorphological studies of migration have mainly considered external features (e.g. Cox 1968; Gaston 1974; Greenberg 1981). Winkler and Leisler (1992) partly overcame this deficit and related skeletal and myological measurements to migration in several passerine and non ...
Leisler, B., Winkler, H.
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Comparative Biochemistry and Physiology Part A: Physiology, 1993
Abstract 1. 1. Eight species of passerines were evaluated for their ability to form conditioned responses to odor stimuli. Only 5 species met training criteria and were tested for odor detection thresholds. 2. 2. Detection thresholds were comparable to other passerines tested.
L Clark, K.V Avilova, N.J Bean
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Abstract 1. 1. Eight species of passerines were evaluated for their ability to form conditioned responses to odor stimuli. Only 5 species met training criteria and were tested for odor detection thresholds. 2. 2. Detection thresholds were comparable to other passerines tested.
L Clark, K.V Avilova, N.J Bean
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Bacterial and Parasitic Diseases of Passerines
Veterinary Clinics of North America: Exotic Animal Practice, 2009Many veterinarians are relatively unfamiliar with the passerines. The aviculture, diagnostic procedures, and common diseases, and their treatment have been discussed in several recent publications. Owners of passerines (songbirds) are using veterinary care in increasing numbers as aviculturists recognize the advances in avian medical and surgical ...
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Adoption by a Territorial Passerine
The Wilson Journal of Ornithology, 2009We observed and video-taped active- ly nesting adult Eastern Bluebirds (Sialia sialis) repeatedly feeding abandoned conspecific juveniles in a nearby nest. We used molecular techniques to confirm these nestlings were unrelated to the adults that fed them.
Russell A. Ligon +2 more
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