16 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



grayish brown edgings, the middle and greater wing-coverts broadly 

 margined at tips with dull white," the tertials broadly edged with the 

 same; outermostprimary narrowly edged with white; outermost rectrix 

 with terminal and most of outer portion white, the next rectrix some- 

 times with a small white spot at tip of inner web; a broad superciliary 

 stripe, most of loral and suborbital regions, malar region, chin, and 

 throat plain vinaceous-cinnamon or fawn color, this sometimes extend- 

 ing over chest; rest of under parts pale buflf or buffy white, the sides 

 and iianks, usually also the chest, more rarely the longer under tail- 

 coverts, rather broadly streaked with dusky; maxilla dark brown or 

 brownish black, paler on tomia; mandible pale brownish, darker termi- 

 nally; iris brown; legs and feet brownish, the tarsi usually paler than 

 toes. 



Adults in OMtumn and winter.^ — Similar to the spring and summer 

 plumage, but upper parts more buffy brown, with dusky streaks less 

 sharply defined, and under parts of body more strongly buffy or buffy 

 yellow. 



Immature {second year?). — Similar to adults, but malar stripe, chin, 

 and throat pale buff or bufl'y whitish, like rest of under parts, super-* 

 ciliary stripe also pale buffy or buffy whitish (at least anteriorly) and 

 chest always (?) heavily streaked with blackish. 



Toun^ in first autumn. — Similar to the supposed immature plumage, 

 as described above, but general color of upper parts much more 

 decidedly brownish and under parts deep creamy buff. 



Adult male.— 'Length (skms), 125-158 (144.6); wing, '80-89 (84); 

 tail, 57-62 (59.8); exposed culmen, 11-12 (11.8); tarsus, 21-22 (21.5); 

 middle toe, 15; hind claw, 9-12 (10)."= 



Adult female.—LeQgth (skins), 128-153 (140.5); wing, 80-83 (81.5); 

 tail, 55-62 (58.5); exposed culmen, 12; tarsus, 22; middle toe, 15; 

 hind claw, 10-11 (10.5).'' 



« These whitish tips usually 'worn away in midsummer, at least on the greater 

 coverts. 



i> Examination of specimens renders it quite certain that the vinaceous color of the 

 throat in this species has nothing to do with season. 



' Six specimens. 



f' Two specimens. 



Western and eastern specimens compare in average measurements as follows: 



