Northern Prairie Wildlife Research Center
STATUS: Very common.
HABITAT: Inhabits open grass or sedge bogs and marshes in the northern spruce forest just south of treeless tundra, or among complexes of pools and water channels with scattered knolls and hummocks. Outside of the breeding season, prefers wet, muddy, or grassy areas such as muddy shores of grass fringed marshes or estuaries, grassy wet meadows, and grass-bordered mudflats of lakes, ponds, or rivers; found less frequently on sandy beaches.
SPECIAL HABITAT REQUIREMENTS: Wetlands of subarctic boreal forests and tundra.
NEST: Nests in a depression in a mossy hummock, a plant tuft, in a clump of grass, or sometimes on the ground, usually in marshy cover but sometimes in drier upland near water.
FOOD: Prefers to feed in marshes, where it snatches insects or probes for food in soft mud or in shallow water. Eats midges and other dipterans, ground beetles, grasshoppers, insect larvae, small crustaceans, small mollusks, and worms.
REFERENCES: Cramp and Simmons 1983, Cottam and Hanson 1938, Low and Mansell 1983, Palmer 1967, Pough 1951, Terres 1980.