354 APPENDIX 



12. Sage Grouse. — Centrocercus urofhasianus. 



Top of head and neck grayish buff, barred with black ; chin, throat, 

 and cheeks white ; throat spotted with black ; upper parts light brown 

 or gray, barred with black, dark brown, and gray ; tail longer than 

 prairie grouse, twenty feathers graduated to a point ; chest gray, barred 

 with blackish brown; bill black. Length, 28 in.; wing, 13 in. 

 Weight, 5 to 8 pounds. 



Female.Sim\\3X, but much smaller. 



Hab. — Sage regions of the Rocky Mountain plateau, and westward, 

 chiefly within the United States, but north to Assiniboia and the dry 

 interior of British Columbia ; east to North Dakota, South Dakota, 

 Nebraska, and Colorado ; south to Northern New Mexico, Utah, and 

 Nevada ; west in California, Oregon, and Washington to the Sierra 

 Nevada and Cascade Range. 



13. Scaled Partridge. — CalUpepla squamata. 



General color slate blue, feathers bordered with black, giving the 

 bird the scaled appearance which suggested name. Head brown or 

 brownish gray ; top of crest white, throat pale buff, hind neck and 

 upper parts of back and breast slate blue ; wings and back pale 

 brown ; bill black. Length, ^yi in. ; wing, 5 in. 



Female. — The same. 



Hab. — Table-lands of Mexico, from the Valley of Mexico north to 

 Central and Western Texas, Santa Yk, New Mexico, and Southern 

 Arizona. 



(a) Chestnut-bellied scaled partridge (CalUpepla squamata castanei- 



gastra). 



Similar to No. 16, except more or less extensive patch of chestnut 

 on belly. 



Hab. — Northeastern Mexico and lower Rio Grande Valley. 



14. California Partridge. — Lophortyx californicus. 



General color blue ; crest black, narrow at base, wider at end ; fore- 

 head buff ; occiput dark chestnut, bordered on sides with black, fol- 

 lowed by white line ; line from bill to eye white ; chin and throat black 

 bordered with white ; back of neck, breast, and upper back blue ; belly 

 buff ; abdomen chestnut ; bill black. Length, 10 in. ; wing, 4^ in. 



Female. — Similar, not so handsome ; crest shorter and brown ; 

 colors more subdued. 



