Small, yellow-olive flycatcher. Brighter yellow than most other Empidonax flycatchers. Look for bold teardrop-shaped eyering that comes to a point behind the eye, and fluffy, peaked crown. Breeds in coniferous and mixed woodlands, often near water; migrants and wintering birds can be found in a variety of wooded or scrubby habitats. Extensive range across western North America, breeding from southeast Alaska to Oaxaca. Winters mainly in west and central Mexico. Listen for squeaky, high-pitched song and calls. In winter, most often detected by unobtrusive high-pitched “tink” call. Formerly split into two species, Cordilleran and Pacific-slope Flycatcher.