Scavenging as a Food-Acquisition Strategy by Peregrine Falcons
| Autor: | Joseph B. Buchanan, Daniel E. Varland, Tracy L. Fleming, Mary Kay Kenney, Cheryl Vanier |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Journal of Raptor Research. 52:291-308 |
| ISSN: | 2162-4569 0892-1016 |
| DOI: | 10.3356/jrr-17-38.1 |
| Popis: | Although best known for capturing live prey, five of the six members of the genus Falco in the United States or Canada are documented facultative scavengers. During 1109 surveys of three coastal beaches in Washington between 1983 and 2015, we observed hunting and feeding by Peregrine Falcons (Falco peregrinus), a species that migrates through and overwinters at those coastal beaches. Excluding records of Peregrine Falcons with food items of unknown origin (n = 44), our 172 observations of feeding included 77 prey items that we concluded the falcons had captured, 46 direct observations of prey captures, and 49 cases of scavenging. Scavenging records represented 29% of our observations of Peregrine Falcons with food items, and included food items representing 19 taxa. Seabirds and waterbirds were the most common food items consumed as carrion (44 of 49 items; 90%), whereas other captured or targeted prey were most often shorebirds or other small birds (206 of 277 items; 74%). We observed 21 color-banded falcons, ranging in age from |
| Databáze: | OpenAIRE |
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