| Abstract: | Kleptoparasitism on other raptors was one means by which Bald Eagles (Haliaeetus leucocephalus) secured food along the North Platte and Platte rivers during the winters of 1978-1980. Species kelptoparasitized were Ferruginous Hawk (Buteo regalis), Red-tailed Hawk (B. jamaicensis), Rough-legged Hawk (B. lagopus), Golden Eagle (Aquila chrysaetos), and Bald Eagle. Stealing of prey occurred more often during the severe winter of 1978-1979 when ice cover restricted eagles from feeding on fish than during the milder winter of 1979-1980. Kleptoparasitism occurred principally in agricultural habitats where large numbers of Mallards (Anas platyrhynchos) were foraging. Subadults watched adults steal food and participated in food-stealing with adults, which indicated interspecific kleptoparasitism may be a learned behavior. We suggest factors that may favor interspecific kleptoparasitism as a foraging strategy of Bald Eagles in obtaining waterfowl during severe winters. |
| Genre: | Article |
| ProdID: | 1001515 |
| Citation Author: | Jorde, D. G.; Lingle, G. R. |
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| Citation End Page: | 188 |
| Citation Issue: | 2 |
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| Citation Language: | English |
| Citation Larger Work Title: | Journal of Field Ornithology |
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| Citation Number Of Pages: | 5 |
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| Citation Phsyical Description: | p. 183-188 |
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| Citation Search Results Text: | Kleptoparasitism by bald eagles wintering in south-central Nebraska; 1988; Article; Journal; Journal of Field Ornithology; Jorde, D. G.; Lingle, G. R. |
| Citation Start Page: | 183 |
| Citation Volume: | 59 |
| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Kleptoparasitism by bald eagles wintering in south-central Nebraska; 1988; Article; Journal; Journal of Field Ornithology; Jorde, D. G.; Lingle, G. R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Fri, 1 Jan 1988 00:00 -0600 |
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