Dawn song in superb fairy-wrens: a bird that seeks extrapair copulations during the dawn chorus
Functional explanations of the dawn chorus in birds remain elusive. One hypothesis suggests that this acoustic display may play a role in female choice of extrapair males. Most young in cooperatively breeding superb fairy-wrens, Malurus cyaneus, are sired by extra-group males. Females initiate extra-group copulations exclusively through predawn forays to males singing in the dawn chorus. We measured variation between males in dawn singing at three levels of song production: song components,...[Show more]
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