You may have heard penguins being referred to as the “birds of the sea,” but unlike most birds, they can’t actually fly. Instead, they’re truly remarkable swimmers, gliding effortlessly ...

Penguins can’t fly but they sure can swim, with one African penguin seen swimming his little heart out on Tuesday.

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, researchers ...

Many can also run, jump, swim, and dive. Some, like penguins, have lost the ability to fly but retained their wings. Birds are found worldwide and in all habitats. The largest is the nine-foot ...