The yellow-eyed penguin (Megadyptes antipodes) is only found in New Zealand is one of the rarest of our penguins. They are known to Maori as Hoiho - the noisy penguin. Standing 65 cm tall and weighing 5 to 6 kg, the yellow-eyed is the fourth largest of the worlds penguins. The distinguishing feature of the yellow-eyed penguin is its distinctive yellow eye and bright yellow stripe that runs through the eye and around the back of the head. Both sexes are alike, although the male does have slightly larger head and feet. Juvenile yellow-eyeds look very similar to the adults, but lack the yellow head band. They gain their adult plumage at one year of age.