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Northern Prairie Wildlife Research Center

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Forest and Rangeland Birds of the United States

Natural History and Habitat Use

Connecticut Warbler -- Oporornis agilis

RANGE: Breeds from east-central British Columbia east across Canada to west-central Quebec, and south to southern Manitoba, northern Minnesota, northern Wisconsin, central Michigan, and south-central Ontario. Winters in South America.

STATUS: Uncommon and local.

HABITAT: Generally inhabits cold, damp black spruce and tamarack bogs, and prefers areas with scattered trees and grassy openings. At the extremes of the breeding range, inhabits well-drained ridges or poplar and aspen woods.

NEST: Conceals nest in a mound of moss or beside a clump of dry grass on or near the ground. Usually nests in open forests with widely spaced trees such as aspen and balsam.

FOOD: Mostly eats spiders gleaned from the ground or low branches, but also eats insects, their larvae and eggs.

REFERENCES: Griscom and Sprunt 1979, Walkinshaw and Dyer 1961, Harrison 1975.

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