Parental care by lone male Ferruginous Hawks (<em>Buteo regalis</em>), Rough-legged Hawks (<em>Buteo lagopus</em>), and Great Horned Owls (<em>Bubo virginianus</em>) was limited to providing food
نویسندگان
چکیده
منابع مشابه
Fatal pox infection in a rough-legged hawk.
Natural pox infection occurred in a free-living rough-legged hawk (Buteo lagopus) in northeastern North Dakota. Gross, histological and electron microscopic findings were typical of pox infection, and characteristic lesions developed in red-tailed hawks (Buteo jamaicensis) but not in great horned owls (Bubo virginianus) following inoculation with case material. Death of the rough-legged hawk wa...
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Grassland and shrubland birds are declining globally due in part to anthropogenic habitat modification. Because population performance of these species is also influenced by non-anthropogenic factors, it is important to incorporate all relevant ecological drivers into demographic models. We used design-based sampling and occupancy models to test relationships of environmental factors that influ...
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The Red-tailed Hawk and Great Horned Owl are two species of raptor that are similar in body size, diet, and habitat. Both species use their hindlimbs during hunting, but differ in foot morphology, how they approach and immobilize prey, and the average size of prey captured. They also differ in primary flight style: the Red-tailed Hawk uses static soaring and the Great Horned Owl uses flap-glidi...
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organs. There are only two serious limitations to using feather pulp for electrophoretic analysis. First, the birds must either be molting when sampled or be subjected to plucking to stimulate feather regrowth and then recaptured at a later date. Second, in small birds such as Bobolinks, warblers (Parulidae), or chickadees (Parus spp.), only tiny amounts of tissue can be obtained from the fligh...
متن کاملFlight initiation by Ferruginous Hawks depends on disturbance type, experience, and the anthropogenic landscape
The expansion of humans and their related infrastructure is increasing the likelihood that wildlife will interact with humans. When disturbed by humans, animals often change their behaviour, which can result in time and energetic costs to that animal. An animal's decision to change behaviour is likely related to the type of disturbance, the individual's past experience with disturbance, and the...
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ژورنال
عنوان ژورنال: The Canadian Field-Naturalist
سال: 2014
ISSN: 0008-3550
DOI: 10.22621/cfn.v128i2.1578