Breeding biology and success of a reintroduced population of the critically endangered puaiohi (Myadestes palmeri)
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Published source details
Tweed E.J., Foster J.T., Woodworth B.L., Monahan W.B., Kellerman J.L. & Lieberman A. (2006) Breeding biology and success of a reintroduced population of the critically endangered puaiohi (Myadestes palmeri). The Auk, 123, 753-763.
Published source details Tweed E.J., Foster J.T., Woodworth B.L., Monahan W.B., Kellerman J.L. & Lieberman A. (2006) Breeding biology and success of a reintroduced population of the critically endangered puaiohi (Myadestes palmeri). The Auk, 123, 753-763.
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 songbirds Action Link |
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Release captive-bred individuals into the wild to restore or augment wild populations of songbirds
A continuation of the programme described in Tweed et al. 2003, found that 91% of 21 female and 13 male puaiohi Myadestes palmeri released between 1999 and 2001 survived to independence (defined as 30 days after release) (Tweed et al. 2006). Seventy-five percent of 12 birds monitored for longer survived the next 50 days. All 12 birds (ten female, two male) monitored during the breeding season had active nests, with 31 nests being built over two years by the ten females and 28 becoming active. The fate of 24 nests was known, with 42% fledging at least one young and 38% being predated (probably by rats). Clutch size (average of 2 eggs/nest, 16 nests), daily survival rates (97%) and fledglings/successful nest (1.4 fledglings/nest, ten nests) were similar for released and wild birds, although fewer fledglings/active nest were produced (0.58 fledglings/nest vs. 1.1 fledglings/nest). Release techniques were the same as in (3), but food was provided for up to 30 days.
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