Nest colonies occur on ledges of vertical sea cliffs up to 300m high, often in association with Black-legged Kittiwakes and murres. Feeds at sea within 150 km of colony. In summer, highest concentrations over deep water, from edge of continental shelf (200 m) to water 2,000 m deep (Byrd and Williams 1993a).
Byrd, G. V. and J. C. Williams. 1993a. Red-legged Kittiwake (Rissa brevirostris). In The Birds of North America, No. 60 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union.