Breeds near freshwater, permanent ponds with no outlet or only seasonal outflow, and small lakes, with only a small fringe of emergent vegetation along the shoreline. Ponds with extensive emergent or submergent vegetation are avoided. Nests in cavities in conifer forest mixed with popular (Gauthier 1993). In B.C., breeds from 300 to 1,430 m in elevation (Campbell et al. 1990).
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.
Gauthier, G. 1993. Bufflehead (Bucephala albeola). In The Birds of North America. Vol. 2, No. 67 (A. Poole and F. Gill, Eds.). Philadelphia: The Academy of Natural Sciences; Washington, D.C.: The American Ornithologists’ Union.