By A Mystery Man Writer
Bluebird, any of the three species of the North American genus Sialia of the chat-thrush group (family Turdidae, order Passeriformes). The eastern bluebird (S. sialis), 14 cm (5 12 inches) long, and the western bluebird (S. mexicana) are red-breasted forms found east and west of the Rockies
Informative - Songbird Station
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A Home for Bluebirds
Are Gourds for the Birds? – FanningSparks
Bluebirds in Maine's Winter - Maine Audubon
Bird News — The Wood Thrush Shop
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Eastern Bluebird Audubon Field Guide
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Western Bluebird Overview, All About Birds, Cornell Lab of Ornithology