Penguins can reach speeds of up to 15 miles per hour and dive to depths of several hundred feet, depending on the species.

More than 99% of birds can fly. But that still leaves many species that evolved to be flightless, including penguins, ostriches, and kiwi birds. In a study in the journal Evolution, researchers ...

Birds are often associated with flight, but not all of them take to the skies. Around 60 species — fewer than 1% of all bird ...

The ostrich can't fly. Instead it has long powerful legs and it can run fast. The penguin can't fly either. And it's not too good at running. But they are great in water. Surprisingly, whether ...

can survive temperatures lower than -70°C, dive to depths of 550m and hold its breath for up to 20 minutes. Penguins may not be able to fly, but they have more feathers than any other bird.

More than 99% of birds can fly. But that still leaves many species that evolved to be flightless, including penguins, ostriches, and kiwi birds. In a new study in the journal Evolution ...