Seasonal Use of Foraging Habitats by American Crows in Central New Jersey
Abstract:Foraging patterns of American Crows Corvus brachyrhynchos were studied in central New Jersey during a period of 21 months in 1983-1984. Weekly roadside censuses at two study sites, one suburban and the other rural, revealed seasonal changes both in the number of feeding Crows and the foraging habitats they used. The food sources used by Crows differed between years during two seasons in which food availability also differed between years. In general, Crows preferred to feed in agricultural fields rather than grassland. Foraging patterns of Crows appeared to be related both to normally occurring seasonal changes in food abundance, and to the less predictable changes in food availability that occur between years. A broad diet may enable Crows to adapt to unpredictable changes in their food supply.
Document Type: Research Article
Publication date: 1990-12-01
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- Bird Behavior is an international and interdisciplinary journal that publishes high-quality, original research on descriptive and experimental analyses of species-typical avian behavior, including the areas of ethology, behavioral ecology, comparative psychology, and behavioral neuroscience.