Some birds are feathered tufts of color so resplendent that they stand out brilliantly from their surroundings. "You have to ask why birds would do this," says Joe Corbo, a biologist at Washington ...

It is dusk at Oliveira Park, in Brownsville — the southern most city in Texas. A large, noisy flock of birds with brilliant green plumages and red splotches on their heads is fluttering in from the ...

A vivid red-crowned Amazon parrot (Amazona viridigenalis) perched on a leafy branch, surrounded by lush green tropical vegetation. The parrot’s striking red forehead, emerald green feathers© Nathaniel ...

“You have to ask why birds would do this,” says Joe Corbo, a biologist at Washington University in St. Louis. “And one of the leading hypotheses is that the male has elaborate ornaments or colors that ...

Add Yahoo as a preferred source to see more of our stories on Google. A vivid red-crowned Amazon parrot (Amazona viridigenalis) perched on a leafy branch, surrounded by lush green tropical vegetation.

Parrots are unique among birds in how they produce the pigmentation that makes their vibrant feathering. It turns out a single enzyme calibrates... How parrot plumage gets its dazzling reds and ...