536 ADDENDA 



753. Polioptila calif ornica. Black-tailed Gnatcatcher. 



Breeds mainly in Up. Son. zone from Ventura Co. s. to San Fernando, 

 L.C.; in winter to Espiritu Santo I.; casual e. to Ft. Yuma. 



754. Myadestes townsendi. Townsend Solitaire. 



Breeds in Boreal zones from e. cen. Alaska, sw. Mack., and w. Alb. s. 

 through Rocky Mts. to N.M. and Ariz., and through Sierra Nevada to 

 San Bernardino Mts., Calif.; reported breeding in Tran. zone in mts. of 

 Durango, Zacatecas, and Coahuila; winters from s. B.C. and Mont. s. 

 straggling to cen. Tex., Kan., and 111. 



755. Hylocichla mustelina. Wood Thrush. 



Breeds in Tran. and Up. Son. zones of e. cen. U.S. w. to 101 in s. S.D. and 

 n. Neb.; casual in Colo.; casual migrant in Cuba; winters from Puebla to 

 Nicar. and C.R. 

 756a. Hylocichla fuscescens salicicola. Willow Thrush. 



Breeds in Low. Can. and Tran. zones from s. B.C., cen. Alb., cen. Sask., 

 and s. Man. s. to cen. Iowa, n. N.M., Utah, Nev., and cen. Ore.; winters 

 in S.A. to Brazil. 



757. Hylocichla alicice alicioe. Gray-cheeked Thrush. 



Breeds in Hud. zone in narrow belt s. of tree limit from ne. Siberia, 

 through nw. Alaska, nw. Mack., and cen. Keew., to cen. Ung., and in 

 Newf . ; migrates along e. coast of Cen. Am. and winters in Colomb., Ecuad., 

 Peru, Venez., and B. Guiana; w. in migration to Mont., Kan., and Tex. 



758. Hylocichla ustulata ustulata. Russet-backed Thrush. 



Breeds in Can. and Tran. zones from Juneau, Alaska, to San Diego Co., 

 Calif.; winters from Vera Cruz, Guat., and Costa Rica to e. Ecuad. and 

 Brit. Guiana. 

 758a. H. u. swainsoni. Olive-ba.cked Thrush. 



Breeds in low. Hud. and Can. zones from nw. Alaska, nw. Mack., 

 cen. Keew., s. Ung., and Newf. s. to W.Va. (mts. from Mass, to Pa.), 

 N.Y., n. Mich., Colo., Utah, Nev., e. Ore., and Kenai Penin., Alaska; 

 winters from s. Mex. to Peru, Bolivia, Brazil, and Argent. 



759. Hylochichla guttata guttata. Alaska Hermit Thrush. 



Breeds mainly in Hud. zone from Mt. McKinley, Alaska, s. to Kadiak 

 T. and Cross Sound; winters s. to Tamaulipas, Nuevo Leon, Chihuahua, 

 Sonora, and L.C.; in migration e. to e. Ore., Nev., N.M., and Tex. 

 759a. H. g. auduboni. Audubon Hermit Thrush. 



Breeds in Can. and Up. Tran. zones from B.C. and Mont. s. to N.M. 

 and Toyabe Mts., Ariz.; winters in w. and cen. Tex. and s. over Mex. 

 tableland to Guat. 

 759c. H. g. nanus. Dwarf Hermit Thrush. 



Breeds in Can. and Tran. zones from Cross Sound, Alaska, s. to coast 

 region of s. B.C.; winters s. to Calif., Ariz., and N.M. 

 759d. H. 0. slevini. Monterey Hermit Thrush. 



Breeds in Tran. zone of coast belt in Calif, from n. Trinity to s. Mon- 

 terey cos.; s. in migration to L.C. and Sonora. 

 759e. H. g. sequoiensis. Sierra Hermit Thrush. 



Breeds in Boreal zones from s. B.C. to high mts. of s. Calif.; s. in mi- 

 gration and in winter to L.C., w. Mex., and w. Tex. 

 761. Planesticus migratorius migratorius. Robin. 



Breeds mainly in Can. and Tran. zones from se. Alaska, s. B.C., and s., 

 Mont. s. (e. to Gt. Plains) to Vera Cruz, Oaxaca, and Jalisco; winters 

 from Kan., Ohio Vail., and N.J. to Fla., Gulf coast, and Nuevo Leon. 

 761a. P. m. propinguus. Western Robin. 



Breeds mainly in Can. and Tran. zones from se. Alaska, s. B.C., Mont., 

 and Black Hills s. to Vera Cruz, Oaxaca, Jalisco, and s. Calif. ; winters 

 from s. B.C. and Wyo. s. to highlands of Guat. 

 763. Ixoreus ncevius ncevius. Varied Thrush. 



Breeds in Can. and up. Tran. zones from Yakutat Bay, Alaska, s. to 

 Humboldt Co., Calif.; winters from extreme s. Alaska s. to Colo. R. in s. 

 Calif. Reported from Colo, in winter. 



