Body
The yellow-eyed penguin, scientifically known as Megadyptes antipodes, is distinguished by a pale yellow band of feathers encircling its eyes and the back of its head, giving it a striking appearance. Its face and crown exhibit a slate grey color flecked with golden yellow, and its eyes are notably yellow. The foreneck and sides of the head are light brown, while its back and tail feature a slate blue-black coloration. The penguin's chest, stomach, thighs, and the underside of its flippers are all white. It is one of the largest penguins breeding on New Zealand’s mainland, standing 62 to 79 centimeters tall and weighing between 3 and 8.5 kilograms. Weight fluctuations occur throughout the year, peaking before moulting when they can lose up to 4 kilograms. Males, averaging around 5.53 kilograms, are typically heavier than females, who average about 5.13 kilograms. Known for their longevity, some individuals can reach up to 20 years of age, with males generally outliving females. This species is mostly silent but emits a shrill, bray-like call at nesting and breeding sites.