Half-male, half-female songbird discovered in Pennsylvania

Biologists recently made a “once-in-a-lifetime” discovery of a bird that’s male on the right side and female on the left. Researchers captured the bird, a rose-breasted grosbeak (Pheucticus ludovicianus), at the Carnegie Museum of Natural History’s Powdermill Nature Reserve, an environmental research center in Rector, Pennsylvania. Plumage colors usually signal if a grosbeak is male […]