Many mammals have fur the color of brown and black. Why don't they have more exotic colors, like purple and neon pink?

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. Parrots, toucans, and other brightly colored tropical birds are ...

Cities are strange ecosystems. For most creatures, they’re harsh, unforgiving places. But some have managed to not just survive, but even thrive in urban environments. That said, even those that ...

Bee-eater birds are stunningly colorful, but their diet of bees and other insects puts them at odds with humans.

EVANSVILLE, Ind. — Birds perform amazing feats. They fly, not just across the yard but across continents. They build nests, each so distinctive that construction and location identify the builder.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Many types of birds ...

The color vision of birds stops working considerably earlier in the course of the day than was previously believed, in fact, in the twilight. Birds need between 5 and 20 times as much light as humans ...

From tiny hummingbirds sipping nectar from blossoms to majestic bald eagles soaring high in the sky, birds are endlessly fascinating and can inspire a deep love of nature. But not everyone has equal ...

During his notable trip to the Galápagos Islands, Charles Darwin collected several mockingbird specimens on different islands in the region. He later discovered that each island only contained a ...