BIRDS OF NORTH AND MIDDLE AMERICA. 449 



Ad/ult male in spring and summer. — Forehead and crown yellow 

 (lemon or gamboge); supra-auricular region, more or less extensively, 

 white (sometimes this carried forward over eyes or even to along sides 

 of forehead); rest of upper parts, including middle pair of rectrices, 

 plain gray ; ^ exposed portion of middle and greater wing-coverts mostly 

 light lemon or gamboge yellow, forming a large and conspicuous patch 

 on the wing; remiges and rectrices (except middle pair of latter) slate- 

 blackish, edged with gray, the secondaries usually slightl}'^ tinged with 

 olive-green; inner webs of three outermost rectrices extensively white 

 terminally, this occupying the terminal half, more or less, on the 

 exterior rectrix; lores, suborbital region, auricular region, and throat 

 (sometimes chin also) uniform black; a broad malar stripe and under 

 parts of body white, the latter shaded with gray laterally; bill black; 

 iris brown; legs and feet dark brownish in dried skins. 



Admit male in winter. — Similar to the spring and summer plumage, 

 but yellow of crown and gray of back, etc. , more or less obscured by 

 olive-green tips to feathers, and the bill brownish with paler mandible. 

 (In younger specimens the feathers of the black throat-patch narrowly 

 margined with white.) 



Adult female. — Similar to adult male but duller in color, with black 

 of throat and sides of head replaced by gray; yellow of forehead and 

 crown less distinct, sometimes (in younger individuals ?) replaced by 

 olive-green; gray of upper parts and of sides usually more or less tinged 

 with olive-green; white of breast and abdomen duller, often tinged with 

 olive-yellow, especially in winter. 



Young. — Above plain dull grayish olive, becoming brighter, more 

 yellowish olive-green, on rump, upper tail-coverts, and edges of rec- 

 trices and remiges; middle and greater wing-coverts tipped with pale 

 yellowish or dull yellowish white, producing two narrow bands; sides 

 of head light grayish olive, the lores, orbits, malar region, and chin 

 dull whitish or dull pale yellowish; throat and chest dull light grayish 

 olive; rest of under parts dull pale yellow. 



Adult maZe.— Length (skins), 106.7-114.3 (109.5); wing, 59.7-65 

 (62.2); tail, 43.2-47.5 (46.2); exposed culmen, 10.4-11.4 (10.7); tarsus, 

 17-18 (17.5).^ 



Adult femMe.—LBngih (skins), 104.1-109.2 (107.4); wing, 57.7-63.5 



' Slightly bluish slate-gray. ^ Nine specimens. 



8654r-voL 2—01 29 



