Songbirds sing so loudly at dawn because they're warming up, study finds

  • By cvbizz
  • August 22, 2020
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Songbirds, they’re just like us.Researchers have found that when song sparrows chirp loudly outside your window in the wee hours of the morning, they’re really just practicing. And like the best crooners, they sing better after they’ve had a chance to loosen their voice.A team from Duke University tested this hypothesis by measuring the vocal performance of 11 swamp sparrows, examining the vocal deviation in

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