Failure of translocated, captive-bred North Island weka Gallirallus australis greyi to establish a new population
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Published source details
Bramley G.N. & Veltman C.J. (1998) Failure of translocated, captive-bred North Island weka Gallirallus australis greyi to establish a new population. Bird Conservation International, 8, 195-204.
Published source details Bramley G.N. & Veltman C.J. (1998) Failure of translocated, captive-bred North Island weka Gallirallus australis greyi to establish a new population. Bird Conservation International, 8, 195-204.
Actions
This study is summarised as evidence for the following.
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Release captive-bred individuals into the wild to restore or augment wild populations of rails Action Link |
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Release captive-bred individuals into the wild to restore or augment wild populations of rails
A replicated study on North Island, New Zealand, in 1992-3 (Bramley & Veltman 1998) found that, of 17 North Island weka Gallirallus australis greyi released between October and March at a mixed habitat site, only one bird was alive more than seven months after release. Most individuals were killed by predators (mainly by domestic dogs Canis familiaris) and 12 individuals (71%) survived less than 50 days. Weka had small home ranges (average of 2.7 ha) and dispersed an average of only 1.3 km during the study.
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