Penguins are small birds, but they cannot fly. The biggest penguins are Emperor penguins. Emperor penguins can get 4 ft tall. The Emperors are black birds with white and yellow markings. Other penguins are black birds but they only have white markings. They don't have wings - they are called "flippers", and flippers help them swim. Some penguins like the Adelie penguins can go up to 40 or even 100 miles per hour, while a few others are a bit faster. 15 miles per hour or higher depends on the penguin species.Emperors also have the largest eggs among penguins. They can be 120mm long and 85 mm wide and weigh about 450 grams.
Almost every penguin puts their eggs on top of their feet so the eggs stay warm. When the chick hatches - the mother arrives. It has a nice barf dinner, awaiting the baby. It may sound gross, but it's not to the penguins.
