164 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



more or less tinged with j'ellow; lesser wing-coverts, scapulars, lower 

 back, rump, and upper tail-coverts plain slate-gray; wings (except 

 lesser coverts) and tail black; middle and greater wing-coverts (except 

 innermost) broadly tipped with white, forming two conspicuous bands; 

 tertials broadly edged with white (this sometimes tinged with yellow); 

 outer webs of secondaries, primaries, and rectrices narrowly edged 

 with pale gray (becoming white on outermost rectrices), their inner 

 webs broadly edged with white; maxilla grayish black, with paler 

 tomia; mandible bluish gray (in life); iris brown; legs and feet light 

 grayish blue (in life); length (skins), 118-134: (125.7); wing, 74-80 

 (77.1); tail, 47.5-52 (49.2); exposed culmen, 10.5-12 (11.5); tarsus, 

 18-20 (19.3); middle toe, 11-12 (11.6)." 



Adult female. — Similar to the adult male and not always distinguish- 

 able, but usually with the yellow slightly paler and duller; length 

 (skins), 119-135 (125.6); wing, 72-78 (75); tail, 47-52 (49.1); exposed 

 culmen, 11-12 (11.8); tarsus, 19-20 (19.8); middle toe, 11-12 (11.5).» 



Young. — Pileum, hindneck, back, scapulars, lesser wing-coverts, 

 rump, and upper tail-coverts, plain soft brownish gray; supraloral 

 line, orbital ring, chin, throat, and chest very pale yellow (primrose), 

 shading into deeper yellow (naples yellow) on malar and suborbital 

 regions and lower portion of auricular region; rest of under parts 

 white, faintly tinged on sides with pale gray; remiges, 'rectrices, and 

 larger wing-coverts as in adults, but edgings of secondaries pale yellow. 



Eastern United States and southern British Provinces; north to 

 Maine (Oxford and Kennebec counties), Vermont (East Bethel), 

 northern New York (Adirondack Mountains), southern Ontario 

 (Hamilton, etc.), and Manitoba (Red River; Winnipeg; Moosejaw); 

 west to edge of Great Plains (Minnesota to Texas); breeding south to 

 Gulf coast, from northern Florida (Wacissa River; Suwanee River) 

 to southern Texas; in winter from southern Florida and Cuba south- 

 ward through eastern Mexico and Central America to Colombia 

 (Pirico; Minca and Onaca, province of Santa Marta, etc.). 



oThirteeii specimens. 



STen specimens. 



Examples from west of the Allegheny Mountains are almost invariably smaller 

 than those from the eastern side of that range, average measurements being as fol- 

 lows. I can discover no color differences: 



