424 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



19.30 (18.80); hind claw, 8.89-9.91 (9.65); extent of white on oliter 

 tail-feather, 26.67-39.62 (33.02).^ 



Young male. — Above dull fulvous-brown, darker and uniform on 

 head, elsewhere indistinctly streaked with dusky; wings dull black, 

 the coverts edged with buffy brown and tipped (on outer web) with 

 paler buffy; tertials with a broad lateral stripe of buffy whitish (passing 

 into fulvous on outer edge) on the terminal portion of the outer web, 

 this light-colored marking occupying greater portion of exposed por- 

 tion of outer web on innermost feather; primaries marked with white, 

 as in the adult; tail as in adult male, the white terminal patch on 

 outermost rectrix about 33 mm. long; chin and throat plain pale buff, 

 with an interrupted blackish stripe on each side; chest deeper buff, 

 thickly marked with cuneate and sagittate streaks of dusky; sides dull 

 fulvous, sparsely streaked with dusky; breast and bellj" dull white; 

 flanks, anal region, and under tail-coverts buff}'. 



Young female. — Essentially like the young male, but the black por- 

 tions of wings and tail replaced by rich, warm brown, the streaks on 

 chest more linear, bolder, and brown instead of blackish; no black on 

 sides of chin. 



[The nestling plumage of both sexes is immediately succeeded, 

 through the autumnal molt, by the adult plumage; and birds in their 

 first winter are practically undistinguishable from older individuals.] 



Eastern United States and more southern British provinces; west 

 to edge of the Great Plains, in Manitoba (Big Plain, Red River Valley, 

 Selkirk Settlement, Carberrj', etc., breeding). North Dakota (Pem- 

 bina, etc., breeding), Kansas, Indian Territory, etc.; breeding from 

 near the Gulf coast (Georgia to Louisiana), north to Maine (Oxford, 



' Thirteen specimens. 



Specimens from opposite sides of the Alleghenies differ but slightly in average 

 measurements and, so far as I am able to see, not at all in color. Average measure- 

 ments of two series are as follows: 



Locality. 



MALES. 



Nine adult males from east of 

 Alleghenies 



Eight adult males from Mississippi 

 Valley 



FEMALES. 



Seven adult females from east of 

 Alleghenies 



Six adult females from Mississippi 

 Valley 



Wing. 



81.03 



80.77 



Tail. 



94.74 

 93.73 



85.86 

 86.36 



Ex- 

 posed 



cul- 

 men. 



14.22 

 13.97 



13.97 

 13.40 



Depth 

 of bill 

 at base. 



11.18 

 11.18 



10.67 

 10.92 



28.45 

 28.46 



26. 92 



27.18 



Middle 

 toe. 



19.81 

 19.66 



18.80 

 18.80 



Hind 



claw 



(chord) . 



9.66 

 10.16 



9.40 

 9.65 



40.64 

 38.35 



34.29 

 31.24 



