Researchers believe that the cardinal frequenting the Caldwells’ bird feeder in Erie, Pennsylvania, is a rare bilateral gynandromorph, half male and half female. Not much is known about the unusual ...

A male and female cardinal in Michigan represent birds who chose a shorter life filled with offspring to maximize their evolutionary impact. Birds worldwide make strategic decisions about how they ...

The beautiful male cardinal bird in this hilarious YouTube clip is very interested in a female and is not being subtle about it! The obvious way he is checking her out may seem amusing to us, but it ...