There are 17 species of penguin scattered across the southern hemisphere. They range from the South Pole to the Galapagos Islands, 6000 miles away. Penguins can survive some of Earth's most ...

Incredibly dense feathers protect penguins from Antarctica's freezing temperatures and biting winds, and substantial fat stores allow them to fast for long periods. These animals are also ...

For some animals, even small bits of sleep can add up and be useful (see graphic). Chinstrap penguins get their name for the thin black band of feathers that extends from ear to ear. They may be ...

Birds are vertebrate animals adapted for flight. 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 ...