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首页> 外文期刊>The Wilson Bulletin >NORTHERN CARDINAL SEXES DEFEND NESTS EQUALLY
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NORTHERN CARDINAL SEXES DEFEND NESTS EQUALLY

机译：北部卡地亚性平等防御

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We exposed nesting Northern Cardinals (C. cardinalis) to models of three predators of cardinal eggs or nestlings (black rat snake [Elaphe obsoleta], Blue Jay [Cya-nocitta cristata], and eastern chipmunk [Tamias striatus]). We attempted to determine relative contributions to nest defense by males and females during the mid-nestling stage of the nesting cycle. For all defense variables monitored, mean responses did not differ between the sexes, although females spent more time in attendance at the nest. Latency to response to the models was strongly correlated between mates, but responses by mates appeared to be independent at the nest. There was little evidence for stimulus-specific defense. Parent bird responses to the predator models and to a mounted Mourning Dove (Zenaida macroura, a "non-threat") likewise did not differ. Active defense of nests may be of limited importance to reproductive success in this cardinal population.
机译：我们将嵌套的北红衣主教（C. cardinalis）暴露于三个主食卵或幼鸟的捕食者模型（黑鼠蛇[Elaphe obsoleta]，蓝鸟[Cya-nocitta cristata]和东部花栗鼠[Tamias striatus]）。我们试图确定在筑巢周期的中间筑巢阶段，雄性和雌性对筑巢防御的相对贡献。对于所有监测到的防御变量，尽管雌性花更多的时间在巢中，但性别之间的平均反应没有差异。配偶之间对模型响应的延迟密切相关，但配偶的响应似乎在巢处是独立的。几乎没有证据表明刺激性防御。亲禽对捕食者模型和已安装的哀悼鸽子（Zenaida macroura，“无威胁”）的反应同样没有差异。积极筑巢对这一主要人群的生殖成功可能具有有限的重要性。

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