0 the horned puffin (fratercula corniculata) is an auk , similar in appearance to  the atlantic puffin; this bird's bill is yellow at the base and red at the tip .
1  it is a pelagic seabird that feeds primarily by diving for fish .
2   it nests in colonies , often with other auks .
3  the yellow bill plate grows before the breeding season and is shed later .
4  they have a small fleshy black "horn" above their eyes .
5  they have a white face with a dark line extending from the back of the eye and red feet .
6 this species breeds on rocky islands off the coasts of siberia , alaska and british columbia , in burrows , in rocky cavities or among rocks .
7  it winters far out to sea .
8  feeding areas are usually located fairly far offshore from the nest .
9  there is usually one chick and both parents feed the young .
10 horned puffins will return from hunting with several small fish in their beaks .
11  they also eat squid and crustaceans .
12 the population of these birds has declined due to the introduction of rats onto some islands used for nesting .
