Breeds in rocky areas with mat tundra in coastal mountains (AOU 1983). Nests in moist tundra, often in recess in side of hummock, sometimes sheltered by dwarf birch or willow (Terres 1980).
AOU. 1983. Check-list of North American birds. 6th ed.American Ornithologists’ Union, Washington D. C.
Terres, J. K. 1980. The Audubon Society encyclopedia of North American birds. Alfred A. Knopf, New York, NY.