First Reported Case of Classical Polyandry in a North American Woodpecker, the Northern Flicker

Karen L. Wiebe

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First Reported Case of Classical Polyandry in a North American Woodpecker, the Northern Flicker

机译：北美啄木鸟北忽悠的第一例经典一妻多夫制案例

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During a study of Northern Flickers (Colaptes auratus) nesting in central British Columbia, I discovered a polyandrous female attending two nests 447 m apart. The phenology at the two nests was staggered so that the female took incubation shifts and fed nestlings at both trees. Hatching success was typical but the female appeared to divide her provisioning effort between the broods. At one nest, only about 20% of visits were by the female, compared to a typical rate of 50%. Polyandrous mating benefited the female, who fledged all six nestlings in one brood and all seven in the other. The mean number of fledglings for monogamous females in this population was 5.9. Two other cases of polyandry possibly related to human disturbance are discussed. These results suggest exceptions to the idea that, in Picidae, the full contribution of both genders during incubation and brood rearing is required to fledge young.

机译：在对不列颠哥伦比亚省中部的北F（Colaptes auratus）筑巢进行的研究中，我发现了一头雌雄同体的雌性，它们相距447 m，两个巢。两个巢的物候交错，使雌鸟进行孵化，并在两棵树上喂食雏鸟。孵化成功是典型的，但雌性似乎将自己的配置工作分给了不同的群体。在一个巢穴中，雌性访视仅占约20％，而通常的比例为50％。一夫多妻的交配使雌性受益，雌性将所有六个雏鸟放到一个巢中，将所有七个雏放到另一个巢中。一夫一妻制女性中的雏鸟平均数量为5.9。讨论了可能与人为干扰有关的一妻多夫制的另外两种情况。这些结果表明了以下观念的例外，即在Picidae中，孵化和孵化幼体都需要性别的全部贡献。

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《The Wilson Bulletin》 |2002年第3期|p.401-403|共3页
作者
Karen L. Wiebe;
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Dept. of Biology, Univ. of Saskatchewan, Saskatoon, SK S7N 5E2, Canada;

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正文语种 eng
中图分类鸟纲;
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First Reported Case of Classical Polyandry in a North American Woodpecker, the Northern Flicker

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