Breeds on barren islands and mainland cliffs (Piatt and Kitaysky 2002). Nests in cliff crevices and among boulders, rarely in ground burrows (AOU 1983). Forages offshore within 100 km of colony (Piatt and Kitaysky 2002).
AOU. 1983. Check-list of North American birds. 6th ed.American Ornithologists’ Union, Washington D. C.
Piatt, J. F. and A. S. Kitaysky. 2002. Horned puffin (Fractercula corniculata). In The Birds of North America, Vol. 16, No. 603 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union.