BIKDS OF NORTH AND MIDDLE AMERICA. 



337 



Ad/idt female. — Similar to the male and sometimes indistinguishable, 

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

 the oecdpital portion, and also the supra-auricular stripe, distinctly 

 gray; length (skins), 152.65-168.66 (159.26); wing, 73.41-80.52 (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. 14.09-17.27 (16.00).' 



Tiii)jiatiir( {youiuj In, first ay titer?) . — Similar to adults, but lighter 

 streaks of ])ack, etc., dull butiy instead of gray; lateral stripes of pileum 

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

 light cinnamon or wood brown instead of white, and gra}' of under 

 parts more or less suffused with ))utfy. 



Young in frst plumage:. — 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 iirst 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 Ba}" (Severn Kiver, 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 Kocky Mountain ranges to the Sierra Nevada, including the 

 intermediate Uintah and Wahsatch ranges; breeding southward to 

 New Mexico and Arizona (San Francisco Mountains), northward to 



' Fifteen specimens?. 

 Eastern and western specimens compare in average measurements as follows: 



Locality. 



Wing. 



Tail. 



Exposed jl^Pj^of 

 base. 



culmen. I 



.MALES. I i 



Seven adult males from Fort Chimo, i 

 Ungava ' 78.23 71. 8S 



Six adult males from Colorado. Califor- 

 nia, etc ! 81. 79 ! 77. 98 



FEMALES. 



Seven adult females from Fort Chimo, 



District of Columbia, etc ! 77.22 71.63 



Eight adult females from California. \ 



Utah, etc ; : 76.20 71.,s8 



11.43 

 11.43 



11. 18 

 11.18 



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 



