Saturday, March 9, 2013

Pine Warbler

Northeastern Minnesota lies on the northwestern limit of the Pine Warbler’s breeding range. In Minnesota they are uncommon—I have seen one in Duluth, but never in Rice County. The species is common in pine forests of eastern United States and adjacent Canada. Unique among warblers is that Pine Warblers breed and winter almost entirely within North America. One reason for this hardiness, which also results in their being early spring and late fall migrants, is that Pine Warblers are also one of the few warblers that regularly consume seeds. Notice the seed in this Pine Warbler’s beak. This photo was taken in the winter along the boardwalk at the Corkscrew Sanctuary in central Florida. Actually, “few data exist on the frequency of [seed-eating] away from feeders and the importance of seeds in the fall or winter diet” (Rodewald et al. 1999).

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