BIEDS OF NORTH AND MIDDLE AMERICA. 



289 



121-149 (134.1); culmen, 15.5-19.5 (17.6); tarsus, 24-28.5 (26); 

 middle toe, 26.5-33 (29. 6). « 



Young. — Very different in coloration from adults, only the rec- 

 trices, remiges, primary coverts, and alulae being similar; no white 

 bar on nape nor metallic feathers on hindneck; pileum, hindneck, 

 sides of neck, and sides of head brownish gray (quaker drab to mouse 

 gray), much paler on chin and upper throat; smaller wing-coverts 

 margined (more or less distinctly) with paler, as are also feathers of 

 chest; scapulars sometimes suffused with browm. 



Downy young. — Entirely (but rather thinly) covered with rather 

 long down, of deep yellowish buff or chamois color. 



Western United States (in Transition Life-Zone), north to south- 

 western British Columbia (Comox; Howe Sound); Vancouver Island 

 (Parksville, Errington, Union Bay, head of Tahsis Canal, Nootka 

 Sound, and near summit of Mount Arrowsmith; Lulu Island), and 

 Montana, from Pacific coast to Rocky Mountains; east to Montana, 

 western North Dakota (Eaglevale, Ransom County), Colorado, New 

 Mexico, and western Texas (Davis, Chisos, and Guadalupe Mts. ; Fort 



o Twenty-eight specimens. 



1957°— Bull. 50, pt 7—16 19 



