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

Libraries Penn Today

chipping sparrow with snow white head - FeederWatch

Field Identification of Subspecies - American Birding Association

Epidemiology

Sparrows, Towhee & Water Thrush Print Original 1890 Color

Up to 1,500 birds flew into some of Philly's tallest skyscrapers

Blue Jay: A New Look at a Common Feeder Bird

Rare sparrows make guest appearance at Penn

Midwest Winter Birds The Nature Conservancy

SINGING SPARROW Original Miniature Acrylic Painting, Sparrow, Bird

White Crowned Sparrow Birds of Pennsylvania

Poster Comes Unframed Great gift for any bird watcher or nature lover Help share the beauty and importance of common wildlife Printed on Pro Lab

Where's Wildlife Backyard Birds of Pennsylvania Poster - Bird Identification Science Chart (16 x 24)