Influence of poisoned prey on foraging behavior of ferruginous hawks
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Abstract
We recorded 19 visits by ferruginous hawks (Buteo regalis) over 6 d at two black–tailed prairie dog (Cynomys ludovicianus) subcolonies poisoned with the rodenticide Rozol® Prairie Dog Bait (0.005% chlorophacinone active ingredient) and at an adjacent untreated subcolony. Before Rozol® application ferruginous hawks foraged in the untreated and treated subcolonies but after Rozol® application predation by ferruginous hawks was only observed in the treated subcolonies. We suggest that ferruginous hawks' preference for hunting in the treated subcolonies after Rozol® application was influenced by the availability of easy-to-capture prey, presumably due to Rozol® poisoning. The energetically beneficial behavior of favoring substandard prey may increase raptor encounters with rodenticide exposed animals if prey vulnerability has resulted from poisoning.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Influence of poisoned prey on foraging behavior of ferruginous hawks |
| Series title | The American Midland Naturalist |
| DOI | 10.1674/0003-0031-177.1.75 |
| Volume | 177 |
| Issue | 1 |
| Year Published | 2017 |
| Language | English |
| Publisher | University of Notre Dame |
| Contributing office(s) | Patuxent Wildlife Research Center |
| Description | 9 p. |
| First page | 75 |
| Last page | 83 |