swallow

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swallow Any of 75 species of graceful and agile birds with long, tapering wings and a long, forked tail. The common swallow (Hirundo rustica), known as the barn swallow in North America, is grey-blue with a light brown underside and red throat markings; it feeds primarily on insects, which it catches in flight. Length: 20cm (8in). Family Hirundinidae.

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