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Re-evaluating Bay-breasted Warbler breeding range: nine-years presence in Lower Michigan

Wilson Bulletin

6035 Ellison.pdf
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Abstract

The breeding range of the Bay-breasted Warbler (Dendroica castanea) is thought to include only the northernmost portions of six northeastern and northcentral states in the United States. During a 10-year banding study of Kirtland's Warblers (Dendroica kirtlandii) in northern Lower Michigan, we caught 44 Bay-breasted Warblers outside of their reported migration dates during 9 of the 10 years. Two birds captured in 1997 were in breeding condition; one possessed a cloacal protuberance and the other a full brood patch. We also captured two hatching year birds with fleshy rictal flanges in 1997. We suggest that these records indicate a long term presence of Bay-breasted Warblers on breeding grounds considerably farther south than previously recorded.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Re-evaluating Bay-breasted Warbler breeding range: nine-years presence in Lower Michigan
Series title:
Wilson Bulletin
Volume
114
Issue:
3
Year Published:
2002
Language:
English
Contributing office(s):
Patuxent Wildlife Research Center
Description:
415-416
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Wilson Bulletin
First page:
415
Last page:
416