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Olive-sided Flycatcher Contopus cooperi (Contopus borealis)


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Olive-sided Flycatcher
credit: Dominic Sherony/CCSA

© Lang Elliot/ (audio)

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Family: Tyrannidae, Tyrant Flycatchers view all from this family

Description ADULT Has mostly dark olive-brown upperparts, with indistinct pale eyering. Wings and tail are mostly blackish with faint pale wing bars; white feathers on side of rump sometimes overlap inner wing feathers at rest. Throat is white and color continues down center of breast to belly and undertail. Streaked dark olive-brown flanks look like an unbuttoned vest. JUVENILE Similar, but plumage, including wing bars, is warmer buff overall.

Dimensions Length: 7 1/2" (19 cm)

Habitat Widespread and still locally common summer visitor (mainly May-Aug) to boreal forests and damp, coniferous woodland. Has declined markedly in recent years. Forest loss and degradation here, and in South American winter quarters, are probably to blame.

Observation Tips Easy to observe, but scarcer in recent years.

Range Alaska, Mid-Atlantic, Southeast, Plains, Western Canada, New England, Northwest, Eastern Canada, California, Southwest, Florida, Rocky Mountains, Great Lakes, Texas

Voice Utters a liquid quip-wee-ber or a rapid wip-wip-wip.

Discussion Plump-bodied, rather dark-looking flycatcher. Often perches on exposed dead branches, adopting an upright posture. Flying insects caught in aerial forays. Bill is dark and relatively large, and tail is short. Sexes are similar.