BIRDS OF NORTH AND MIDDLE AMERICA. 



337 



Adult female. — Similar to the male and sometimes indistinguishable, 

 but usually with the median crown-stripe rather narrower and grayer, 

 the occipital portion, and also the supi'a-auricular stripe, distinctly 

 gray; length (skins), 152.65-168.66 (159.26); wing, 73.41-S0.52 (76.71); 

 tail, 68.33-76.45 (72.39); exposed culmen, 10.41-11.94 (11.18); depth 

 of bill at base. 7.11-8.13 (7.37); tarsus, 21.34-24.38 (23.11); middle 

 toe. 14.99-17.27 (16.00).^ 



fill iiiatio'e [young m flrduHiiterf). — Similar to adults, but lighter 

 streaks of back, etc. , dull buffy instead of gray; lateral stripes of pileum 

 and postocLilar streak chestnut instead of black; median crown-stripe 

 light cinnamon or wood brown instead of white, and gray of under 

 parts more or less suffused with buffy. 



Youiuj hi fir d 'plAiiiiiuje. — Lateral stripes of pileum light brown, 

 streaked with dusky; median stripe pale buff' or buffy whitish, 

 streaked with dusky; under parts dull buffy whitish, the chest, sides 

 of throat, sides, etc., streaked with dusky; upper portion of lores 

 (down to anterior angle of eye) brownish, like forehead; otherwise 

 much like young in first winter, but streaks on back, and scapulars 

 blackish instead of chestnut-brown. 



More eastern British Provinces and greater part of United States; 

 breeding from Vermont (Rutland), Province of Quebec (near city of 

 Quebec, Point de Monts, etc.), northeastern Minnesota (?), etc., north- 

 ward to west side of Hudson Bay (Severn River, Albany Fort, etc.), 

 and over peninsula of Labrador to southern Greenland, and through- 

 out the high mountain districts of the western United States, from 

 the main Rocky Mountain ranges to the Sierra Nevada, including the 

 intermediate Uintah and Wahsatch ranges; breeding southward to 

 New Mexico and Arizona (San Francisco Mountains), north wai-d to 



^ Fifteen specimens. 

 Eastern and western specimens compare in average measurements as follows: 



Locality. 



MALES. 



Seven adult males from Fort Cliimo, 

 Ungava 



Six adult males from Colorado, Califor- 

 nia, etc 



FEMALES. 



Seven adult females from Fort Cliimo, 

 District of Columbia, etc 



Eight adult females from California, 

 Utah, etc 



Wing. 



78.23 

 81.79 



Tail, 



71.88 

 77.98 



77. 22 71. 6 



76.20 ! 71.8 



Exposed 

 culmen. 



11.43 

 11.43 



11.18 

 11.18 



Depth of 

 bill at 

 base. 



7.62 



7.62 



7.62 

 7.37 



23.11 

 23.62 



23.11 

 23.11 



Middle 

 toe. 



16.26 

 17.27 



16.00 

 16.00 



I am unable to detect the slightest difference in coloration between eastern and 

 western specimens. 



17024—01 22 



