Ornithologists have theorized that birds first began to build nests when they were unable to locate natural cavities. Of the 470 perching (passerine) birds in North America, about 25 percent use holes ...

Neighboring groups of birds within the same species can create very different-looking nests — showing that their nest-building choices aren't solely controlled by instinct and the environment. Instead ...

When we think of bird nests, most of us imagine a simple bundle of twigs tucked in a tree branch. But that common image is just one part of a much bigger story. Around the world, birds have found many ...

A male and female Baltimore oriole feed their young while perched on their hanging nest, which is made of materials like thin twigs, plant cotton and bark strips. Spring is in the air — which means ...

Contrary to its name, the common coot is no ordinary bird. Contrary to its name, the common coot is no ordinary bird. These plump, black-and-white birds have made themselves at home in the canals of ...