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.

Rare painted bunting captivates birdwatchers in O'Hara

A flying squirrel, a tiny insect eater and 19 other rare animals

White Crowned Sparrow Birds of Pennsylvania

For the Birds: Southeast hosts exceptional rare birds this winter

Epidemiology

A cardinal that is half male, half female puzzles scientists

A rare painted bunting bird is wintering in Bartram's Garden

Wintertime Birds

Clay-colored Sparrow by Drew Weber

A rare painted bunting bird is wintering in Bartram's Garden

North American grassland birds in peril, spurring all-out effort

Some orioles are being dyed a brilliant red by the food they eat

Sparrows with Racing Stripes, Lifestyles

SINGING SPARROW Original Miniature Acrylic Painting, Sparrow, Bird

Rare Gray Paint Sample by Sherwin-Williams (6199)

HGTV HOME by Sherwin-Williams Rare Gray Interior Paint Sample

One score and four shades of perfection flat colors - Rare Books Collection - UTSA Digital Collections

The Rare and Radiant Reddish-Brown Painite

Extremely rare' 2,500-year-old broken silver coin unearthed near Jerusalem