Habitat
Found along coastal areas, especially rocky stretches, including bays, inlets, channels, surge narrows, sounds, coves, and harbors (Campbell et al. 1990). Breeds along rocky coasts in cavities or burrows adjacent to shallow water foraging areas (Sanger 1987a, Ainley and Boekelheide 1990). Colonies found on large rocky islands and headlongs (Campbell et al. 1990). Winters in sheltered inshore waters (Scott 1973, Oakley 1981, Ainley and Boekelheide 1990).
References
Ainley, D. G. and R. J. Boekelheide. 1990. Seabirds of the Farallon Islands. Stanford University Press, Stanford, CA.
Campbell, R. W., N. K. Dawe, I. McTaggart-Cowan, J. M. Cooper, G. W. Kaiser, and M. C. E. McNall. 1990. The Birds of British Columbia. Vol. 1 and 2, Nonpasserines. UBC Press, Vancouver, B.C.
Oakley, K. L. 1981. Determinants of population size of Pigeon Guillemots on Naked Island, Prince William Sound, Alaska, M. S. thesis. University of Alaska, Fairbanks.
Sanger, G.A. 1987a. Trophic levels and trophic relationships of seabirds in the Gulf of Alaska. Chapter 10 in: Croxall, J.P. (Ed.). Seabirds: feeding, ecology and role in marine ecosystems. Cambridge University Press, Cambridge, U.K.
Scott, J. M. 1973. Resource allocation in four synoptic species of marine diving birds. Ph. D. diss., University of Oregon.
