Male hummingbirds spread their tail feathers to make a sexy chirp while dive bombing to impress females, according to a study that shows how the repertoire of sounds made by birds is richer than ...

At first I suspected they didn’t borrow from any particular bird species, Susan. I thought the electronic “chirp” may have been created out of thin air by engineers using computers. All that’s needed ...

Add Yahoo as a preferred source to see more of our stories on Google. The wonderful sound of birdsong is one of nature's most purest pleasures. However, some birds have taken it to the extreme. Meet ...

Birds do it and so do doughnut-shaped fusion facilities called 'tokamaks.' But tokamak chirping -- a rapidly changing frequency wave that can be far above what the human ear can detect -- is hardly ...

April is the time of year when we can enjoy the chirping of a variety of birds. From mid-February through May, I head to the mountains and forests whenever possible to photograph beautiful birds in ...