Baltimore Oriole

The Baltimore Oriole breeds across southern Canada and the United States east of the Rocky Mountains and winters mostly from central Mexico to northwestern South America. It hybridizes with Bullock’s Oriole in a narrow zone where their ranges meet in the Great Plains, and as a result, the two were once lumped together as a single species (“Northern Oriole”). However, the American Ornithologists’ Union split them again in 1995 on the basis of genetic studies that showed them not even to be one another’s nearest relatives.

The adult male Baltimore Oriole is bright orange with a black hood and back and a large white wingbar. The adult female has a grayish crown and back and two white wingbars. The underparts range in coloration from almost as bright orange as the male in some individuals to a light orange-yellow in others. Immatures generally resemble adult females; consult field guides for separating these plumages from Bullock’s and other orioles.

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