Warming temperatures have prompted a rare hybridization of a blue jay and green jay, according to researchers at the ...

A backyard sighting has led to what researchers say may be the first hybrid offspring of a blue jay mating with a green jay.

Move over, Bowie – there’s a new bilateral gynandromorph in town. In a Colombian forest, zoologists have captured footage of an extremely rare and vividly colored half-green, half-female, half-blue, ...

A woman in a San Antonio suburb took a photo one spring morning in 2021 of a bird in her yard that looked odd. Its feathers ...