Male cardinals are red. Female cardinals are tan. The odd bird that's been roosting outside John and Shirley Caldwell's kitchen in Erie, Pennsylvania, is an even split of both. Divided down the middle ...

A birdwatching couple in northwestern Pennsylvania has documented one of nature's most rare and elusive occurrences. Jeffrey and Shirley Caldwell, two experienced birdwatchers based in Erie, lured of ...

When Pennsylvania-based birder Jamie Hill heard that a friend of a friend had sighted a northern cardinal that was part red and part white, he thought it might be leucistic—in other words, it had lost ...

James R. Hill III has marveled at the feathered animals for 48 years, but on Saturday he saw a 'one in a million' bird with bright red like a male cardinal on one side and brownish white like a female ...

A homeowner in north Florida spotted the rare bird when it stopped for something to eat at her bird feeder, she told McClatchy News. Nick Nicholson via Unsplash When a homeowner in northern Florida ...

Editor's note: Jamie Hill was misidentified in a previous version of this story. Longtime birder Jamie Hill of Waterford knew he'd come across something rare when he saw the northern cardinal that ...

A northern cardinal was caught in central Texas with a rare abnormality that causes it to have female plumage on one side of its body and male on the other. Typically male cardinals are the well-known ...

Thanks to the developmental fusion of male-female bird twins into one individual, this northern cardinal is half red and half tan -- split lengthwise down its middle -- and is half male and half ...