Magellanic penguins are medium-sized penguins which grow to be 61–76 cm (24–30 in) tall and weigh between 2.7 kg and 6.5 kg (5.9-14.3 lbs). The males are larger than the females and the weight of both drops while the parents nurture their young. Adults have black backs and white stomachs. There are two black bands between the head and the breast, with the lower band shaped in an inverted horseshoe. The head is black with a broad white border that runs from behind the eye, around the black ear-coverts and chin, and joins at the throat. Chicks and younger penguins have grey-blue backs, with a more faded grey-blue color on their chest. Young birds usually have a blotched pattern on their feet, with this ‘blotching’ fading as they age. By the time these birds reach about ten years of age, their feet usually become all black.