The Bicknell’s Thrush is known for scarcity… and promiscuity. Unlike most songbirds, the female thrush establishes a territory and then mates with males that happen by. She then lays eggs that have been fertilized by multiple different males. Many of those males will stick around and help feed the young, even if they are not their own. Each year, these little songbirds make the long journey from the Caribbean Islands to the forests of the northeastern coasts of North America.

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More info and transcript at BirdNote.org.

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