Humboldt Penguins are medium-sized penguins, growing to 65-70 cm (26-28 in) long and a weight of 4.7 kg (10.4 lbs). They have a black head with a white border running from behind the eye, around the black ear-coverts and chin, to join on the throat. They have blackish-grey upperparts and whitish underparts, with a black breast-band extending down the flanks to the thigh. They have a fleshy-pink base to the bill. Juveniles have dark heads and no breast-band. Humboldt Penguins nest on islands and rocky coasts, burrowing holes in guano and sometimes using scrapes or caves. The current status of this penguin is vulnerable, due to a declining population caused in part by over-fishing. Historically it was the victim of guano over-exploitation. Penguins are also declining in numbers due to habitat destruction. The current population is estimated at between 3,300 and 12,000. Thanks for viewing and all past comments, Have a Great Day!