To know what a tropical bird is, you first have to know where the tropics are. The tropics form a band around the equator, ...

Typically, females appear less colorful than males; this adaptation helps protect females from predators. Such an adaptation is important considering that females are usually the primary parents.

The female Green Honeycreeper bird is appropriately enough colored green, whereas the male is blue. So, what happens when a Honeycreeper is half of each sex? Well, as recently taken photos show us ...

Naturally is a column written by a rotating cast of experts at the NJ Audubon. Within the past two months, I’ve had two ...

The yellow warbler at the corner of South Van Ness and 22nd is a bird with yellow and black stripes that migrates between California and South America. When they were in town, they congregated in the ...

In addition to blue, green and red cone cells, many birds have cone cells that are sensitive to ultraviolet light, allowing them to see a broader spectrum of colors than people can.