Erect, gray-vested, drab flycatcher. Common in western half of US. Timing: summer. Prefers open woodlands, forest edges. Medium with a longish, narrow bill; plumage is olive, buff. No known interbreeding with Eastern Wood-Pewee despite overlap in Great Plains. Snaps bill defending nest. Very difficult to separate Eastern and Western Wood-Pewee on wintering grounds, so wintering range is poorly known. Diet includes insects, which they flycatch. Oldest wild individual recorded was 8. Population ~ 6 million.