A Mountain Bluebird in Harford Co., Maryland (11/8/2020). Photo by Jim Brighton. (MBP list)
A Mountain Bluebird in Harford Co., Maryland (11/8/2020). Photo by Jim Brighton. (MBP list)
Mountain Bluebird in Harford Co., Maryland (11/8/2020). (c) kyle klotz, all rights reserved. Photo by Kyle Klotz. (MBP list)
A comparison of specimens at the Smithsonian Institute - Eastern Bluebirds (left two) and Mountain Bluebirds (right two). View more specimen photos. Photo by Bill Hubick. (MBP list)
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