Rare sparrows make guest appearance at Penn

Earlier this year, Penn Medicine epidemiologist Doug Wiebe glimpsed two small all-white birds outside Van Pelt Library that turned out to be albino house sparrows. Their coloration is likely the result of a genetic condition in which a bird’s feathers lack pigment.

White Crowned Sparrow Birds of Pennsylvania

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Pennsylvania bird watcher spots a stunning rare cardinal that is

White-crowned Sparrows

Earlier this year, Penn - University of Pennsylvania

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