Carotenoids are the underlying pigment for much of the enormous variety of color found across birds and form the basis for the colors red, yellow and orange. In a study published in Current Biology, ...

Yellow House Finch: Normal or Not? House finches are common birds that brighten up backyard feeders across the United States. Bird-watchers throughout the country admire their rosy plumage and cheery ...

While yellow-billed finches don't produce red carotenoids in their bills, they can still make them in their retinas. "It's not that yellow-billed birds lack the genes for making red coloring; rather, ...

Probably, the American goldfinch should have been included in last week's column. It's another good starter bird, like the yellow warbler. It shouldn't be confused with the yellow warbler, though. The ...

A highly endangered rainbow-colored Australian finch is breaking all the rules when it comes to avian evolution, according to new research published today by scientists from CU Boulder, the Cornell ...

Carotenoids are the underlying pigment for much of the enormous variety in color found across birds and form the basis for the colors red, yellow, and orange. In a study published in Current Biology, ...