Sunday, December 16, 2012

Worm-eating Warbler

Worm-eating Warblers breed in the southeastern United States and winter in Central America.  As near as they get to the Upper Midwest is usually in the Ozark Mountains of Arkansas. Yet in my 30 years in Aberdeen, South Dakota, I banded this species twice, once on 2 May 1988 and again on 9 May 2005. The species is rare in southeastern Minnesota, with most records in May (Eckert). Presumably these spring birds are over-shooting their normal breeding range. Caterpillars, once known as “worms,” comprise the bulk of the Worm-eating Warbler’s diet: hence this warbler’s name (Hanners and Patton 1998).

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