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threatened and/or endangered species detail

Barn Swallow Hirundo rustica


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credit: Mdf/CCSA

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Migration Info The extensive winter range of this species -- from central Mexico to the southern tip of South America -- is somewhat misleading; the bulk of the North American population is believed to winter in the lowlands of eastern South America. Determining the actual whereabouts of any population of Barn Swallows in winter is complicated by several factors: These birds are extremely nomadic, they join huge roosting aggregations, and at any time in nearly any season of the year, one population or another is migrating. During spring migration thousands of these birds may aggregate near bodies of water, particularly during periods of inclement weather.

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