Eastern Bluebird (Sialia sialis) July 24, 2020 1661 × 1329 Eastern Bluebird (Sialia sialis) Eastern Bluebird (Sialia sialis) male, Jan 2020, Napeague. Breeder/year-round. January, 2020. Breeder. May overwinter on Long Island; usually found with a small feeding flock that includes chickadees.