Rancraft Penguins adds ten different species of penguins to your world:

Emperor Penguins
King Penguins
Yellow-Eyed Penguins
Magellanic Penguins
Galápagos Penguins
Adélie Penguins
White-Flippered Penguins
Little Blue Penguins
Flame Penguins
Ninja Penguins
Cloud Penguins

Download here : http://www.5minecraft.net/