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Moving I`iwi (Vestiaria coccinea) as a surrogate for future translocations of endangered `Akohekohe (Palmeria dolei)

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Title: Moving I`iwi (Vestiaria coccinea) as a surrogate for future translocations of endangered `Akohekohe (Palmeria dolei)
Authors: Becker, Dusti
Massey, Greg
Groombridge, James
Hammond, Ruby
Keywords: Vestiaria coccinea
Palmeria dolei
avian translocation
LC Subject Headings: Hawaiian honeycreepers -- Hawaii -- Maui.
Wildlife recovery -- Hawaii -- Maui.
Iiwi -- Hawaii -- Maui.
Issue Date: Apr 2010
Publisher: Pacific Cooperative Studies Unit, University of Hawai‘i at Mānoa
Citation: Becker D, G Massey, J Groombridge, Hammond R. 2010. Moving I`iwi (Vestiaria coccinea) as a surrogate for future translocations of endangered `Akohekohe (Palmeria dolei). Honolulu (HI): Pacific Cooperative Studies Unit, University of Hawai‘i at Mānoa. Technical Report, 172. 13 pg.
Series/Report no.: Technical Report
Abstract: Translocations often play an important role in the recovery of endangered species. To assess feasibility for translocation of endangered `Akohekohe (Palmeria dolei), we conducted an experimental translocation of I`iwi (Vestiaria coccinea) from east to west Maui. Mist-netting, veterinary screening of candidate birds, and helicopter transport of healthy I`iwi were successful, resulting in no injuries or mortalities. Translocated birds were assigned to two types of release. Hard release birds were radio tagged and released on the day of translocation. In contrast, soft release birds were held in large cages for 7 days and fed artificial nectar. During holding soft release I`iwi feeding rates, fecal production, and mass were monitored. Soft release birds suffered 33% mortality during the holding period. At the end of the holding period, soft release survivors were outfitted with a radio transmitter and released. All translocated I`iwi were followed by radio telemetry for an average of 21 days. Once released, soft release birds showed higher rates of movement, possibly reflecting conflict with established hard released I`iwi. Our results suggest that translocation efforts for wild `Akohekohe will be successful if hard release protocols are followed.
Description: Reports were scanned in black and white at a resolution of 600 dots per inch and were converted to text using Adobe Paper Capture Plug-in.
Sponsor: Maui Land and Pine provided cabins, access, and logistical support. We thank Hawaii Division of Forestry and Wildlife for financial support, the Maui Veterinary Services Office for I`iwi health monitoring, and the Pacific Cooperative Studies Unit of the University of Hawaii for administrative support. Dr. Schmidt’s necropsy analyses were valuable to the study. We greatly appreciate the difficult fieldwork conducted by staff at the Maui Forest Bird Recovery project. We thank T. Malcolm and C. Brosius for their contributions in field biology and radio telemetry, and their careful recollections of the project. Special thanks to D. Leonard, P. Hart, and D. Duffy for review of the manuscript.
Rights: CC0 1.0 Universal
Appears in Collections:The PCSU and HPI-CESU Technical Reports 1974 - current

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