SNOWBIRD

junco, snowbird

(noun) small North American finch seen chiefly in winter

fieldfare, snowbird, Turdus pilaris

(noun) medium-sized Eurasian thrush seen chiefly in winter

Source: WordNet® 3.1

Etymology

Noun

snowbird (plural snowbirds)

A bird, Junco hyemalis, the dark-eyed junco.

A bird seen primarily in the winter time.

The snow bunting (Plectrophenax nivalis).

A person, usually one who is retired, who travels from a cold climate to a warmer one in the winter.

(slang) A cocaine user.

Source: Wiktionary

Snow"bird, n. (Zoöl.) (a) An arctic finch (Plectrophenax, or Plectrophanes, nivalis) common, in winter, both in Europe and the United States, and often appearing in large flocks during snowstorms. It is partially white, but variously marked with chestnut and brown. Called also snow bunting, snowflake, snowfleck, and snowflight. (b) Any finch of the genus Junco which appears in flocks in winter time, especially J. hyemalis in the Eastern United States; -- called also blue snowbird. See Junco. (c) The fieldfare. [Prov. Eng.]

Source: Webster’s Unabridged Dictionary 1913 Edition