“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 ...

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 ...

It began just before dusk, parked in a Harlingen cul-de-sac. We watched from the car as the trees filled with a flock of about 70 pairs, families and larger groups. We watched as they spent the ...

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 ...

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 ...