Bird lore - Project Puffin

Notes on the Plumage of North American Birds 99
It is restricted to the Pacific coast region from northern Lower CaUfornia north
to Oregon. While it presents practically no variation in color with age, sex, or
season, it varies considerably with locality, four races of it being recognized.
Since they are non-migratory, the purposes of field identification will best be
served by outlining their distribution as it is given in Dr. Grinnell's recent,
authoritative 'Distributional List of the Birds of California' as follows:
Pallid Wren-Tit (Ckamcea fasciata henshawi). Common resident of the
Upper Sonoran Zone west of the deserts and Great Basin drainage from the
Mexican line through the San Diegan district, northward coastwise to San
Luis Obispo and San Benito counties, and interiorly along the western foothills
of the Sierra Nevada to the lower McCloud River, in Shasta County; also
along the inner northern coast ranges from Helena, Trinity County, and Scott
River, Siskiyou County, south to Covelo, Mendocino County, and Vacaville,
Solano County. The easternmost stations for this form are: vicinity of
Walker Pass, Kern County, and Campo, San Diego County.
Intermediate Wren-Tit (ChamcBa fasciata fasciata). Common resident of
the coast region south of San Francisco Bay, from the Golden Gate to southern
Monterey County; east to include the Berkeley hills and at least the west
slopes of the Mount Hamilton range.
Ruddy Wren-Tit (Chamaa fasciata rufula). Common resident of the humid
coast belt immediately north of San Francisco Bay, in Marin, Sonoma, and
Mendocino counties. Northernmost station for this form: Mendocino City.
Coast Wren-Tit {ChamcBa fasciata phcea) . Fairly common resident locally
in the extreme northern humid coast belt. Humboldt and Del Norte Counties.