American Bird Conservancy Posted October 3, 2014 Share Posted October 3, 2014 The Allen's Hummingbird is very similar to the closely related Rufous Hummingbird, and the two species occasionally hybridize. Female and juvenile Allen's and Rufous Hummingbirds usually cannot be easily distinguished from one another in the field. View the full article Link to comment Share on other sites More sharing options...
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