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Archive for March 5, 2012

Snow Buntings

Snow Buntings begin arriving in the northern half of the United States from their summer home on the northern tundra by the end of October, and remain here until March, when they begin migrating back to their breeding grounds. Although both males’ and females’ backs and heads are brownish, their bellies and a good portion of their wings are white, and when they take to the air, a flock of snow buntings bears a strong resemblance to a massive snow storm. By the time their breeding season arrives, the male has a totally white head and belly, and a jet black back.  This is not because of a second molt – snow buntings only molt their feathers once a year in the late summer – the change in appearance is due to the fact that underneath the colored feather tips, the back feathers are pure black and the body feathers all are white. The male wears off all of the feather tips by actively rubbing them on snow, which produces his black and white breeding plumage. (There is one male snow bunting in this photograph that is close to having breeding plumage — can you find it?)