The horned puffin is a small, pigeon-sized bird with black uppersides and a white chest and undersides. It has a white face and cheeks with a small black "horn" above its eyes and a thin, dark line that runs from from its eyes to the nape of its neck . It has a large, triangular orange bill with a red tip. It has bright orange legs and webbed feet with claws on the ends of them. In the winter its bill is smaller; its feathers are grayer and its face is darker. Males and females look similar, but the male's bill is bigger and brighter than the female's bill and the male is a little larger. Because of its colorful bill, the horned puffin is sometimes called the sea parrot. Horned puffins exhibit a types of deceptive coloration called counter shading. Animals with countershading have different colors on their backs and stomachs. The puffin's dark coloring on the top makes it hard for predators above them to see them because the puffin blends into the dark water. The light coloring on the underside of the puffin helps them to blend into the sunlit water above and makes locating the puffin more difficult for predators swimming under them. The horned puffin is pelagic. A pelagic animal lives on the open sea. In breeding season it can be found on sea cliffs or on rocky islets. In the summer puffins will come in from the open ocean to mate. Puffins form pairs that will mate for life. A pair will usually build a nest in a crevice in a cliff or in a hole between boulders. The female lays only one egg a year. Both parents incubate the egg. They place the egg under a wing and then lean their body against the egg. The egg hatches in about 40 days and both parents feed and protect the chick. When the chick fledges in 40 days the parents will leave the chick and return to the open ocean. The chick will also fly out to open ocean waters and remain there for at least two years. Puffins breed in large colonies with the tufted puffin.
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