Word Study
bluebird
CIDE DICTIONARY
bluebird, n.
A small song bird (Sialia sialis ), very common in the United States, and, in the north, one of the earliest to arrive in spring. The male is blue, with the breast reddish. It is related to the European robin. [1913 Webster]
OXFORD DICTIONARY
bluebird, n. any of various N. American songbirds of the thrush family, esp. of the genus Sialia, with distinctive blue plumage usu. on the back or head.
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