The cries of a Killdeer are familiar across most of the U.S. during spring and summer. But where do they go in winter? Killdeer that breed in the southern half of the US and along the Pacific Coast are year-round residents. But those that breed in the northern U.S. and Canada, where winter conditions are more severe, migrate south to Mexico and Central America. Because the northern Killdeer fly south — right over the region where other Killdeer reside year-round — they are known as leap-frog migrants.

More info and transcript at BirdNote.org. 

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