Those that stay put for the winter plump up by fluffing up their feathers ... The Round Yellow-rumped Warbler is one of eight burly birds featured in this year's Wisconsin Fat Bird Week online ...

Often seen as a lemon-colored blur among leafy treetops, the American yellow warbler is challenging to view with binoculars or capture with a camera. Patience and a bit of luck make it worth the ...

Then we clean and color the feathers before gluing them together to make boas, fans, and plumes. Our toughest customer is Big Bird. His tremendous costume uses feathers from the rear end of a ...

Just as eating carotenoid-rich carrots can tint human skin, making it appear slightly tanned, feasting on carotenoid-rich caterpillars makes bird feathers yellow, orange and red. “If we don’t ...

Those that stay put for the winter plump up by fluffing up their feathers ... Yellow-rumped Warbler and Dark-eyed Junko in the Trunko. No worries about body image problems in this contest. "A fat ...

Recent studies show that certain feather pigments can help neutralize toxic pollution. It means darker, duller birds could have a survival advantage. By Marta Zaraska Some popular city dwellers ...