The animal kingdom gives us rainbows of color with butterflies and chameleons, and clownfish, but birds give us just as much ...

Discover 5 types of birds that are blue! Beyond blue jays, we dive into tree swallows, eastern bluebirds, and much more!

Scientists theorized that birds look blue for the same reason the sky looks ... set of fine blue feathers signifies a healthy, well-fed male, advertising his good genes to potential mates.

The bill is thin and pale gray. Breeding male: blue-gray above, including most of head and back. Crown has a black line at the forecrown that extends along the sides of crown; white eye ring ...

Blue-footed boobies are aptly named, and males take great pride in their fabulous feet. During mating rituals, male birds show off their feet to prospective mates with a high-stepping strut.