304 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



plain cinnamon-rufous or hazel (more or less deep), fading into whitish 

 or pale reddish buffy on chin (sometimes all round base of bill) and 

 into paler cinnamon-rufous or rufous-whitish on chest, the latter 

 (sometimes lower foreneck also) more or less streaked or spotted 

 with dusky; rest of under parts, including axillars and most of under 

 wdng-coverts, white, the breast (at least laterally) and sides more 

 or less streaked and spotted with dusky; hindneck light grayish 

 brown, more or less tinged with cinnamon-rufous, and streaked with 

 blackish or dusky; scapulars and interscapulars black centrally, 

 margined with cinnamon-rufous and duU bufly whitish; wing-coverts 

 brownish gray, darker centrally and margined indistinctly with paler, 

 the greater coverts tipped with white; primary coverts dusky, the 

 proximal ones tipped with white; primaries grayish brown, becoming 

 darker distally, the proximal quills narrowly edged with whitish, 

 the shafts of all largely wliite; rump deep brownish gray, the feathers 

 narrowly margined with whitish; median upper tail-coverts and 

 middle pair of rectrices dusky, the latter with outer webs narrowly 

 edged with white, the remaining rectrices pale brownish gray, very 

 narrowly and indistinctly edged with white; lateral upper tail-covertR 

 white; bill and feet dull black (in dried skins) ; iris dark brown 



Adult female in summer. — Similar to the male and not always 

 distinguishable, but usually with the cinnamon-rufous of head, neck, 

 etc., slightly less deep. 



Winter ■plumage. — Above brownish gray or grayish brown, passing 

 into white on forehead, the crown and occiput narrowly streaked or 

 longitudinally flecked with dusky, the scapulars and interscapulars 

 with narrow shaft-streaks of dusky and narrowly and indistinctly 

 margined terminally with whitish; wing-coverts (except more 

 anterior lesser coverts) with more distinct dusky shaft-streaks and 

 broader dull whitish terminal margins; remiges, tail, etc., as in sum- 

 mer; under parts, including loral and malar regions, immaculate 

 white. 



Young. — Crown and occiput light brown, broadly streaked with 

 black; hindneck pale grayish, narrowly and indistinctly streaked with 

 darker; interscapulars black, margined with light rusty brown and 

 whitish, the scapulars similar but with broader and more whitish 

 margins; wing-coverts dusky centrally, broadly but not sharply 

 margined with pale buffy grayish or dull whitish, the greater coverts 

 tipped with white; tertials dusky, margined with light rusty brown 

 and white; primaries as in adults; rectrices (except middle pair) gray 

 margined with white and with a median streak of white; forehead 

 (to above eyes laterally), lores, rictal and malar regions, and entire 

 under parts immaculate white, the sides of chest, however, with a 

 few streaks of brownish gray or dusky, and lores with an indistinct 

 streak of grayish brown, from eye to bill. 



