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Abstract
We report the first records of Peregrine falcon (Falco peregrinus) predation on endangered Laysan teal (or duck; Anas laysanensis) and predation on endangered Laysan finches (Telespiza cantans). At Midway Atoll, vagrant Peregrine falcons killed ≥4% of a newly translocated Laysan teal population in 2006 and ≥2% in 2008. On Laysan Island during 2008–2009, remains of >76 Laysan finches (<1% of the population) were found at peregrine perches. On Midway Atoll, all depredated Laysan teal and other seabirds were recovered at kill sites on tarmac (runways). If the frequency or duration of vagrant raptors visitation increases at small atolls, this could pose a mortality risk to consider, especially during proposed translocations of endangered species. Vegetation restoration of abandoned runways near wetlands at Midway Atoll would provide cover and may help reduce mortality of endangered species due to vagrant raptors.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | State or Local Government Series |
| Title | Peregrine falcon predation of endangered Laysan teal and Laysan Finches on remote Hawaiian atolls |
| Series number | HCSU-065 |
| Volume | 65 |
| Year Published | 2015 |
| Language | English |
| Publisher | University of Hawaii at Hilo |
| Publisher location | Hilo, HI |
| Contributing office(s) | Pacific Island Ecosystems Research Center |
| Description | iii, 13 p. |
| Larger Work Title | HCSU Technical Report Series |
| First page | 1 |
| Last page | 13 |
| Country | United States |
| Other Geospatial | Laysan Island, Midway atoll |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |