Nest defense by Carolina Wrens
Nest defense by Carolina Wrens
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DOI：
10.1676/06-149.1
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发表时间：
2008-09-01
影响因子：
0.3
通讯作者：
Neudorf, Diane L. H.
中科院分区：
文献类型：
--
作者：
D'Orazio, Kelly A.;Neudorf, Diane L. H.
研究了卡罗莱纳鹪鹩（Thryothorus ludovicianus）对鸟类入侵者的巢防御行为。冷冻干燥的巢寄生虫（雌性褐头牛鹂[Molothrus ater]），巢捕食者（蓝冠鸦[Cyanocitta cristata]），和控制（斯温森的画眉[Catharus ustulatus]）的坐骑在鹪鹩巢，检查如果弗伦斯能够区分这些威胁。卡罗莱纳弗伦斯的主要巢防御行为是发出警报声。弗伦斯花更多的时间报警呼叫蓝松鸦模型比控制和褐头燕八哥模型，这表明燕八哥不被认为是威胁的巢。弗伦斯不太可能在产卵阶段的试验，可能是由于缺乏巢访问在这个时候。报警电话的强度没有增加，从铺设到雏鸟阶段的任何模型。卡罗莱纳弗伦斯在社会上和遗传上都是一夫一妻制的，雄性应该投入大量资金来照顾年轻人，因为它们对父权的信心很高。男性和女性没有不同的时间花费报警呼叫的任何模型，并捍卫他们的巢入侵者与同等强度的预测的信心亲子假说。
We examined nest defense behavior of the Carolina Wren (Thryothorus ludovicianus) in response to avian intruders at the nest. Freeze-dried mounts of a brood parasite (female Brown-headed Cowbird [Molothrus ater]), nest predator (Blue Jay [Cyanocitta cristata]), and a control (Swainson's Thrush [Catharus ustulatus]) were presented at wren nest,, to examine if wrens were able to distinguish among these threats. The primary nest defense behavior of Carolina Wrens was alarm calls. Wrens spent more time alarm calling to the Blue Jay model than the control and Brown-headed Cowbird model,,; suggesting cowbirds were not recognized as threats to the nest. Wrens were less likely to respond during laying stage trials, probably due to a lack of nest visitations at this time. Intensity of alarm calls did not increase from the laying to nestling stage for any of the models presented. Carolina Wrens are both socially and genetically monogamous, and males should invest heavily in care of young due to their high confidence of paternity. Males and females did not differ in the amount of time spent alarm calling to any of the models, and defended their nests from intruders with equal intensity as predicted by the confidence of paternity hypothesis.