. Handbook of birds of the western United States including the great plains, great basin, Pacific slope, and lower Rio Grande valley . The Macgillivray warbler is one of the commonest of w^estern war-blers, frequenting chaparral and underbrush especially near water,from the lower levels to the high mountains, and the appearance ofa little gray head peering out shyly from the bushes becomes a pleas-antly familiar mountain sight. 681a. Geothlypis trichas occidentalis Brewst. male. — Forehead and sides of head black, bordered above withwhite, sometimes tinged with yell
. Handbook of birds of the western United States including the great plains, great basin, Pacific slope, and lower Rio Grande valley . The Macgillivray warbler is one of the commonest of w^estern war-blers, frequenting chaparral and underbrush especially near water,from the lower levels to the high mountains, and the appearance ofa little gray head peering out shyly from the bushes becomes a pleas-antly familiar mountain sight. 681a. Geothlypis trichas occidentalis Brewst. male. — Forehead and sides of head black, bordered above withwhite, sometimes tinged with yellow; rest of upper parts plain olivegreen ; under parts deep yellow. In win-ter, washed with brown. Adult female :without black, ashy, or white ; upper partsolive brown, often tinged with reddishbrown on crown, greenish on tail; underparts pale yellowish or yellowish male in frst winter: like adult, butblack mask less distinct. Male: length(skins) , wing , tail , bill . Female : length (skins), wing , tail ,bill . ^g• * Geothlypis trichas scirpicola Grimiell. Tule Yellow-throat. Like occidentalis, but brighter colored and larger, with longer tail. Distribution. — Resident in fresh water tule beds along coast of southern California.{The Condor, iii. 65.) Geothlypis trichas sinuosa Grinnell. Salt Marsh Yellow-throat. Like occidentalis, but smaller, and back and sides darker. Distribution. — Resident about salt marshes of San Francisco Bay and vicinity. {TheCondor, iii. 65.) 426 WOOD WARBLERS Distribution. — Breeds from British Columbia to Arizona, and from theMississippi Valley to the Sierra Nevada and Cascades; migrates to CentralAmerica. Nest. — On or near the ground, supported by weed or sedge stalks,deeply cup shaped, usually with a thick foundation of grass or leaves, some-times lined with hair. Eggs : often 4, white, finely speckled on larger endwith dark brown and black, someti
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