What bird lays blue eggs? What do chickadee eggs look like? Look at photos to help you identify bird eggs from 10 different ...

Puzzlingly, many birds add human-made material to their nests with no obvious function – now there is evidence that these ...

The location, shape and construction of a nest is as good a way to identify a species as is feather colour or song is to ...

In the city centre of Amsterdam, a seemingly ordinary bird nest tells an extraordinary story of human impact on the environment. It's constructed from unexpected materials, including sunglasses ...