508 ADDENDA 



3736. 0. a. mccalli. Texas Screech Owl. 



Low. Son. zone from extreme s. Tex. to Tamaulipas and Nuevo Leon, 

 Mex. 

 373c. O. a. bendirei. California Screech Owl. 



Sw. Ore. and Calif. 

 373d. O. a. kennicotti. Kennicott Screech Owl. 



Nw. coast region from Sitka to Ore. 

 373e. O. a. maxwellice. Rocky Mountain Screech Owl. 



Foothills and adjacent plains of e. Rocky Mts. from se. Mont, to cen. 

 Colo. 

 373/. 0. a. cineraceus. Mexican Screech Owl. 



Up. Son. and Low. Tran. zones of s. Calif., Ariz., N.M., nw. Mex., 

 and n. L.C. 



3730. O. a. aikeni. Aiken Screech Owl. 

 S. Colo, and e. to cen. Tex. 



373/1. O. a. macfarlanei. MacFarlane Screech ^Owl. 

 Interior of B.C. s. to w. Mont., Ore., and e. Wash. 



3731. O. a. gilmani. Sahuara Screech Owl. 



Low. Son. zone of se. Calif., Ariz, (probably N.M.), and nw. Mex. 

 373.1. Otus trichopsis. Spotted Screech Owl. 



S. Ariz, to Guat. 

 374. Otus flammeolus flammeolus. Flammulated Screech Owl. 



Ariz., Colo., and w. Tex. s. to highlands of Guat. 

 374a. O. f. idahoensis. Dwarf Screech Owl. 



Tran. zone in B.C., Wash., and Idaho s. to Calif. 

 375a. Bubo virginianus pallescens. Western Horned Owl. 



E. Ore., Mont., and Minn. s. to w. Tex., ne. Mex., N.M., Ariz., and 

 se. Calif. 

 3756. B. v. subarcticus. Arctic Horned Owl. 



Breeds from nw. Mack, and cen. Keew. to Vail, of Sask., and probably 

 glacier region of Mt. St. Elias and Mt. Fairweather; s. in winter to n. 

 U.S. from Idaho to Wis. 

 375d. 1 B. v. pacificus. Pacific Horned Owl. 



Klamath Lakes, Ore., and valleys and s. coast of Calif. 

 375c. B.- v. saturalus. Dusky Horned Owl. 



Pac. region from Ft. Yukon, Cook Inlet, and Prince Wm. Sound s. 

 along coast to San Luis Obispo Co., Calif., and in Rocky Mts. to Ariz, and 

 N.M.; in winter to Ft. Simpson, Mack. R. 

 376. Nyctea nyctea. Snowy Owl. 



N. part of N. Hemis. In N. Am. breeds on barren grounds from Is. of 

 Bering Sea and Yukon delta to Melville I. and n. Greenl. s. to n. Ung., 

 cen. Keew., and cen. Mack. ; winters from Arctic coast s. to s. Can. Provs. 

 and Mont, and irregularly to e. states; straggling to Calif., Tex., N.C., etc. 

 377a. Surnia ulula caparoch. Hawk Owl. 



Breeds from nw. Alaska, nw. Mack., and Hud. Str. to Ung., (casually 

 Mont.), cen. Alb., and s. B.C.; winters s. to s. Can. Provs., casually to 

 Wash., Neb., Ind., and New Eng. 



378. Speotyto cunicularia hypogcea. Burrowing Owl. 



B.C. to Man. and s. to La. and Pana. ; migratory n. of Ore. and n. Kan. 



379. Glaucidium gnoma pinicola. Rocky Mountain Pgymy Owl. 

 Timbered mts. of n. Colo., Ariz., and N.M., and Sierra Madreof Mex. 



379a. G. g. californicum. California Pygmy Owl. 



Humid coast Tran. zone from s. B.C. s. to mid. Calif. 



380. Glaucidium phalcenoides. Ferruginous Pygmy Owl. 

 Tex. and Ariz. s. to s. Brazil. 



381. Micropallas whitneyi. Elf Owl. 



S. Calif, to s. Tex. and s. through tablelands of Mex. and L.C. 

 382.1. Rhynchopsitta pachyrhyncha. Thick-billed Parrot. 



Mts. bordering tablelands of Mex.; n. casually to Chiricahua Mts., 

 Ariz. 



1 Sequence of species changed in 1910 Check-List. 



