The Ultimate Penguin Quiz

They differ in size and the markings on heads and necks, but otherwise are similar in appearance.

The little blue penguin is the smallest, reaching a height of 12 inches (30 cm).

The largest penguin reaches 39 inches (1 m).

It received that name because of its loud braying call.

Since they nest about 500 feet (150 meters) above sea level, they have to hop up steep rocky slopes.

These nests are located high above sea level to keep them safe from predator leopard seals, which are not good climbers.

The rockhopper has a bright orange-red bill, a yellow crest and red eyes.

They are found in the Galápagos Islands, on the Equator.

Human encroachment on its food supply and hunting grounds endangers these penguins

They often throw themselves on their stomachs and glide across the ice.

They use their flipperlike wings to swim while guiding themselves with their feet.

Some can swim at more than 20 miles per hour (32km/h).

The emperor penguin dives to more than 1,700 feet (518 m).

They eat only when they are at sea and their diet consists of fish, squid and shrimps.

The male and female usually take turns incubating.

The incubating penguin does not eat.

A few hours after she lays it, the female turns the egg over to the male, who incubates it for a two-month period.

It doesn't build a nest, but incubates the egg by carrying it on its foot, protected by a fold of skin.

Penguins have lungs and lack gills, which means they need to surface to breathe.