BIRDS OF NORTH AND MIDDLE AMERICA. 



33 



and proximal secondaries (next to tertials) immaculate white; 

 distal secondaries deep brownish gray, their inner webs and basal 

 portion of outer webs white, the outer webs edged with white distally ; 

 primary coverts and primaries dull black or dusky (fuscous-black to 

 dark chsetura drab) ; lateral and terminal upper tail-coverts white, 

 the latter sometimes (rarely) with a few dusky spots or blotches, 

 the median anterior coverts sometimes margined with white; tail 

 deep brownish gra}'", becoming darker (sometimes nearly black) 

 distally, the lateral rectrices with basal half or more white; under 

 parts of body, including lower chest, axillars, and under wing-coverts, 

 immaculate white, the under primary coverts sometimes more or 

 less broadly tipped with brownish gray, and the carpo-metacarpal 

 region with more or less of dusky spotting; bill (m life) vermilion 

 red, deeper (tinged with carmine) in middle portion, the basal por- 

 tion more orange-red, the tip yellowish; naked eyelids vermilion red; 

 iris bright yellow; legs and feet very pale flesh color or pinkish white. 



Young. — Head and neck dull black or dusky, the pilcum and cheeks 

 speckled with dull fulvous, and the feathers surrounding base of bill 

 whitish; upper parts grayish brown, each feather rather broadly 

 margined with dull buffy or fulvous; otherwise much like adults, 

 but upper tail-coverts tipped with buff, bill brownish, iris brown, 

 and feet dull livid grayish. 



Downy young.— Head and neck dull light brownish gray or buffy 

 gray, finely mottled with darker, and with a narrow postocular line 

 of black; rest of upper parts light buffy gray, finely mottled with 

 darker, and relieved by two narrow stripes of black which extend, 

 parallel to each other, from the upper back to the rump ; under parts 

 of body immaculate white; bill dusky, the basal half of mandible 

 dull orange; iris brown; legs and feet dull flesh color. 



Adult male.—Wing, 246-258 (253.4); tail, 94-103 (98.2); cul- 

 men, 76.5-86 (81.1); greatest depth of bill, 13-14 (13.4); tarsus, 

 53.5-58 (56.1); middle toe, 37.5-41.5 (40.1).« 



Adult female.— Wing, 256-269 (260.2); tail, 99-105 (102.4); cul- 

 men, 86-91 (88.6); greatest depth of bill, 13-14 (13.6); tarsus, 

 53-58 (55.6); middle toe, 39-43 (40.8).° 



40017— 19— Bull. .TO, pt 8- 



