The fastest animals in the world fly, swim, and run on land. Most of them are birds you probably have never seen before, especially the Frigate Birds that can stay up in the sky for a week.

THE world’s fastest bird, the Peregrine Falcon (Falco peregrinus), paid a flying visit to the North Coast Regional Botanic ...

A piece from the American Institute of Physics points out that Gentoo penguins are the fastest swimming birds in the world, and that ability comes from their unique and sophisticated wings.