Key Identification Features
- This bird has a short, thick, blackish bill, a distinct white eye ring, and overall gray plumage.
- An isolated island subspecies of the eastern bluebird lives on Bermuda, and has a distinctive brighter blue coloration compared to mainland populations.
- Different sources vary widely in their descriptions of the ranges of the subspecies, in part due to additional subspecies recognized by Clements.
- It shows distinct sexual dimorphism in its plumage.
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