The eastern bluebird is a species familiar to millions ... Departs northernmost range during October. Usually migrates in flocks. Winter: almost always in flocks, often mixed with yellow-rumped ...

For identification, western bluebirds vs eastern bluebirds are quite similar ... One thing you might notice on the range map ...

As the most strongly migratory bluebirds, they stray out of range and have been spotted in almost all the eastern states. Range maps provided by Kaufman Field Guides, the official field guide of ...