The Pacific-Slope Flycatcher is a small songbird found primarily in the western regions of North America. It belongs to the family Tyrannidae and is known for its olive-green upperparts and pale yellow underparts. This bird typically inhabits forests, woodlands, and shrubby areas, where it can be seen flitting about in search of insects and other small invertebrates. During the breeding season, the Pacific-Slope Flycatcher is recognized by its distinctive call, which sounds like "fitz-bew." It migrates to warmer regions in the winter, often traveling to areas in Mexico and Central America. This species plays an important role in controlling insect populations in its habitat.