Song learning by prairie warblers: When, where, and from whom,Ethology

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Song learning by prairie warblers: When, where, and from whom
Ethology ( IF 1.3 ) Pub Date : 2020-08-19 , DOI: 10.1111/eth.13087
Bruce E. Byers ₁ , Michael E. Akresh ₂ , David I. King ₃

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Songbirds of many species acquire their songs by imitating the songs of conspecific singers. Conclusive evidence of such imitation comes from controlled laboratory studies, but such studies do not reveal when and where songbirds learn their songs under natural conditions. To determine the timing and location of song learning in a population of prairie warblers, we compared the songs of yearling prairie warblers of known hatching location to the songs of other birds in the yearlings' natal and first breeding areas. The comparisons yielded a likely model song (and model singer) for each of the song types used by the focal yearlings. We supplemented our findings from the song comparisons with inferences drawn from an analysis of local geographic variation in songs. This analysis revealed that shared song types showed no tendency to be geographically clustered within the study area. Taken together, our data suggest that prairie warblers learn their songs during the hatch year, at locations somewhat distant (mean distance 1,437 m) from their natal site, most likely as birds wander about during the post‐fledging period.

中文翻译：

草原莺莺的歌曲学习：何时，何地，和谁

许多物种的鸣禽都是通过模仿同名歌手的歌曲来获得歌曲的。此类模仿的确凿证据来自受控实验室研究，但此类研究并未揭示鸣禽在自然条件下何时何地学习其歌曲。为了确定在草原莺的种群中学习歌曲的时间和地点，我们将已知孵化地点的一岁草原莺的歌曲与一岁鸽的出生和首次繁殖地区的其他鸟类的歌曲进行了比较。比较结果为焦点一岁鸽使用的每种歌曲类型提供了可能的模特歌曲（和模特歌手）。我们通过对歌曲中本地地理变化的分析得出的推论作为对歌曲比较结果的补充。这项分析表明，共享歌曲类型在研究区域内没有呈现出地理上聚集的趋势。综上所述，我们的数据表明，草原莺在孵化年期间在离出生地点稍远的地方（平均距离1,437 m）学习歌曲，这很可能是因为鸟类在出雏后徘徊。

更新日期：2020-08-19

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