164 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



more or less tinged with 3'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) broadh^ tipped with w^hite, 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 (10.3); middle toe, 11-12 (11.6)." 



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

 able, but usualh^ with the yellow slightl}" 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.). 



« Thirteen specimens. 



''Ten specimens. 



Examples from west of the Allegheny Monntains 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: 



