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Assessment of Potential Limiting Factors for Translocation of Endangered Mariana Swiftlets to Rota
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The Mariana Swiftlet is an endangered species endemic to the Mariana Islands of Guam, Rota, Aguiguan, Tinian, and Saipan. The last known sightings on Rota occurred in 1976 and, following the lead of a successful reintroduction on O’ahu in the 1960’s, the possibility of reintroduction to Rota is being explored. Little is known about the natural history, ecological requirements, movements, or flexibility of the swiftlet to adapt to new circumstances. Preliminary objectives include assessing current swiftlet nesting caves, compiling long-term nesting information collected on Saipan, and assessing inter-roost fidelity and movements. Additionally, the USGS is describing how climate affects swiftlet annual life cycles, comparing currently occupied caves to potential caves on Rota, and designing experimental translocations of swiftlets among sites on Oahu. This study develops a thorough understanding of the ecology of the swiftlet that is needed prior to establishing additional populations to meet recovery priorities.
Haig, Susan M. - Supervisory Research Wildlife Biologist
Phone: 541-750-7482
Email: susan_haig@usgs.gov
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