Dusky Flycatcher Identification Guide

Key Field Marks

• Size & shape: A small, slim flycatcher typical of the Empidonax genus, with an upright perching posture, frequent tail-flicking, and a moderate primary projection (wingtip extension past the folded tertials) that is neither especially short nor especially long.
• Plumage: Grayish-olive upperparts, a whitish to pale gray throat and breast, and a pale belly with a faint yellowish wash; two whitish wingbars.
• Eye-ring: A fairly bold, often somewhat teardrop-shaped or slightly widened white eye-ring behind the eye — a helpful supporting mark.
• Bill: Fairly short and narrow, dark on the upper mandible with a pale to dull orange base on the lower mandible.

Separating It From Similar Species

Empidonax flycatchers are famously difficult to separate by sight alone; voice is the most reliable clue, but structure and habitat help narrow the choices:

• Hammond's Flycatcher: Shorter-tailed with a larger-headed appearance, generally darker and grayer overall, and a shorter primary projection; often forages higher in the canopy of denser conifer forest.
• Gray Flycatcher: Paler and grayer overall, has a longer bill that is mostly pale (pinkish) with only a dark tip, and characteristically dips its tail downward (rather than flicking it up) — and prefers more open sagebrush and juniper habitat.
• Least Flycatcher: Shows a bolder, more complete white eye-ring, a relatively larger head, and gives a sharp, distinctive "che-bek" call; found more in the East and in aspen/deciduous habitats.
• Best practice: Because of the extensive overlap in plumage between these species, always try to confirm identification with vocalizations whenever possible, especially the song.

Habitat, Range & Season

Breeds in brushy montane forest edges, open coniferous and mixed woodland, chaparral, and shrubby mountain slopes across the western United States and southwestern Canada, generally at mid- to high elevations. It arrives on breeding grounds in spring and departs by early fall, wintering in Mexico.

Voice

The song is a distinctive burry, three-part phrase often rendered as "sillit... brrk... grrreep," with each phrase having a different quality; the call is a sharp, dry "whit." Voice is by far the most reliable way to confirm identification against similar Empidonax species.