"Most s winter well offshore in the central North Pacific. There are about one million individuals, with 86% in North America. The Horned Puffin generally nests among rocks or in cracks in the cliffs. ... The Tufted Puffin is the commonest puffin in the Pacific with 3 million birds (82% in North America). Breeding colonies occur on both sides of the Pacific from the Arctic south to in Japan and to the winter waters of California. Wintering areas are located in the deep oceanic waters of the central North Pacific. Birds typically breed in earth burrow near the cliff edge, partly because it is easy to dig there and partly because there the heaviest of the puffins and have difficulty in taking off from flat ground. ... Adults eat mainly squid and planktonic invertebrates."