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 ...

In a new book, a curator at England’s Natural History Museum describes rare and interesting nests and eggs—from the house sparrow to the village weaver—and the lessons they hold for avian conservation ...

On a fine Monday morning in May, a bluebird lays her first egg. She produces another one the next day, another on Wednesday and her fourth and last blue egg is added to her nest on Thursday. Nearly ...

Snakeskin decor is a bold interior design choice—but for some birds, it's literally a matter of life and death. This is the conclusion of researchers from New York's Cornell University, who found ...

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 ...

It’s the Mad Max dream of a bird’s nest: A menacing composite of metal, clay, twig and plastic. Spotted in a sugar maple tree in Antwerp, Belgium, the gnarly architecture brims with at least 1,500 ...

A nest with a roof may provide some birds with more protection. But bird species that build simpler nests may be more adaptable to changing conditions. By Rebecca Dzombak Many of the bird nests you’ll ...

One man’s trash is a common coot’s treasure, at least when it comes to plastic. In Amsterdam, the birds have been constructing nests out of plastic food wrappers, masks and other waste for at least 30 ...