A "once-in-a-lifetime” sighting made by a Pennsylvania birdwatcher took internet flight in late February 2021 when photographs claimed to capture a half-male, half-female northern cardinal. The ...

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 ...

There’s no flitting around it, this is a rare bird. A cardinal that appears to be half-female and half-male was recently spotted in Pennsylvania. Jamie Hill, a birdwatcher for 48 years, documented the ...

Shirley and Jeffrey Caldwell don’t fashion themselves professional birdwatchers, but they dabble. “We just watch out the window, and we have some feeders,” Shirley told NBC News. But they know enough ...

PITTSBURGH (KDKA) -- A longtime birdwatcher in Warren County says he had a "once-in-a-lifetime" bird sighting - a cardinal that is half male and half female. "I had a once-in-a-lifetime, one in a ...

Editor's note: The video above is from Feb. 2021, and features Andrea Tims who runs a bird sanctuary in Maine. A Pennsylvania man hopped on Facebook, ecstatic to tell everyone he knew about the ...

The cardinal tetra is one of the most well-known aquarium fish. They're the world's most-in-demand Amazonian ornamental fish, accounting for almost 80% of the total fish export from Amazonas, a state ...

TEXAS, USA — A cardinal caught recently in central Texas has a rare abnormality that causes it to have female feathers on one side of its body and male on the other. The Inland Bird Banding ...

An incredibly rare bilateral gynandromorph Northern Cardinal — essentially, half-female half-male — was cited over the weekend in the Grand Valley area. A similar bird in Erie was featured in the New ...

TEXAS, USA — A cardinal caught recently in central Texas has a rare abnormality that causes it to have female feathers on one side of its body and male on the other. The Inland Bird Banding ...