Energy expenditure in wild birds
نویسندگان
چکیده
منابع مشابه
Antibiotic resistance in wild birds
Wild birds have been postulated as sentinels, reservoirs, and potential spreaders of antibiotic resistance. Antibiotic-resistant bacteria have been isolated from a multitude of wild bird species. Several studies strongly indicate transmission of resistant bacteria from human rest products to wild birds. There is evidence suggesting that wild birds can spread resistant bacteria through migration...
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Global warming is changing the optimal time of breeding in birds (1), and as a result interest has increased in causes and consequences of variation in time of breeding. Thomas et al. (2) reported that energy expenditure of blue tits, Parus caeruleus, feeding young decreased as their breeding time was closer to the peak in caterpillar food supply, and that “persistence” (number of years individ...
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Callitrichid females are often described as energetically constrained. We examined the energy budgets of 10 female wild golden lion tamarins (GLTs, Leontopithecus rosalia) in an effort to understand how energy intake and expenditure might influence physical condition and therefore reproductive performance. We used focal animal sampling to record behavioral data and conducted energy analyses of ...
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The aim of this study was to determine the energy expenditure of a group of cavers of both genders and different ages and experience during a 10 hour subterranean exploration, using portable metabolimeters. The impact of caving activity on body composition and hydration were also assessed through bioelectrical impedance, and nutritional habits of cavers surveyed. During cave activity, measured ...
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New Caledonian crows (Corvus moneduloides) are renowned for using tools for extractive foraging, but the ecological context of this unusual behavior is largely unknown. We developed miniaturized, animal-borne video cameras to record the undisturbed behavior and foraging ecology of wild, free-ranging crows. Our video recordings enabled an estimate of the species' natural foraging efficiency and ...
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ژورنال
عنوان ژورنال: Proceedings of the Nutrition Society
سال: 1997
ISSN: 0029-6651,1475-2719
DOI: 10.1079/pns19970107