How do birds see colors? As colorful as birds are to the human eye, ... K-means works by dividing the colors of a bird into distinct groups, or 'clusters' to find the most representative colors.

U.S. birds display a wide array of striking hues. But just how colorful are our American birds? What you need to know from our study.

I love spring … the colors, the smell, the sounds of singing birds. After a winter of gray skies, white landscapes and no smells — I just love spring. I am fortunate enough to spend a l… ...

Colorful birds thrive in cities, according to new research. Avian species that do well in urban areas have feathers of a more ...

The beautiful hues and plumes of birds have long drawn the attention and interest of mankind. But, do we really know the true spectrum of avian coloration and vision? The answer may lie in the ...

In birds, the pigment melanin generates black, gray, brown, and orange colors. Carotenoids are used by specialized feather structures to create those brighter hues. The other process is through ...

Carotenoid deficiency is most likely the reason house finches in Phoenix are less red than their desert cousins, Dr. McGraw said. In one of his studies, 74 percent of urban female finches had no ...