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Breeding Range. (Fig. 143). Common in the Turtle Mountains; fairly common in the Pembina Hills of Cavalier and Pembina Counties, in the wooded deltaic sand area of western Pembina County, and in the wooded hills and lake shores of the Devils Lake area (southern Ramsey County and extending south in eastern Benson County to Wood Lake); rare and local in Walsh and Grand Forks Counties--recorded in swamps along the Park and Turtle rivers.

Breeding Habitat. Brushy bogs, shrub swamps, second-growth swamp forests, and wood borders of ponds, lakes, and streams. Characteristic woody plants include various species of shrub willows, swamp birch, speckled alder, red-osier dogwood, and black ash.

Nesting. According to Judd (1917), nests with eggs that were recorded in the Turtle Mountains include one at Fish Lake during 1909-1910, and one with eggs about two-thirds incubated that was photographed near the fish hatchery on July 12, 1916. The latter nest was composed of small twigs, rootlets and moss and was situated on a shelf in a bank of a recently dug ditch. Wood (1923) collected a juvenile specimen at Lake Upsilon, Rolette County, on July 30, 1920. During 1967-1969, one active nest was found in the Turtle Mountains (Bottineau County) by Calvin Cink.

Figure 143. Breeding Range of Northern Waterthrush.