sage thrasher

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A light grayish-brown thrasher (Oreoscoptes montanus) that nests in low sage and cactus bushes in dry or desert regions of the western United States.

Wiktionary

1. n. A thrasher (Oreoscoptes montanus) which is a pale gray-brown above and white with brown streaks below and inhabits sagebrush regions in south-western North America.

GNU Webster's 1913

1. n. (Zoöl.) a singing bird (Oroscoptes montanus) which inhabits the sagebrush plains of Western North America.
2. n. (Zoöl.) See under Sage.