Contopus sordidulus is a small passerine bird also known as the Western Wood Pewee. It is an insectivore and commonly found in western North America. Some synonyms for the Contopus sordidulus include the Pacific Slope Pewee, the Oregon Pewee, Western Pewee, and Ash-throated Flycatcher. These names reflect the bird's geographical distribution and the coloration of its throat. The Western Wood Pewee is a solitary bird known for its distinctive call. It is known to thrive in forests, woodlands, and scrublands, feeding on flying insects. Identifying the synonyms of this bird species can aid in recognizing and studying its habitation and behavior.