BIRDS OF NORTH AND MIDDLE AMERICA. 505 
STERNA DOUGALLI Montagu. 
ROSEATE TERN. 
Adults in summer (sexes alike).—Pileum, nape, and upper half of 
lores uniform deep black; rest of upper parts plain pale gray (pallid 
neutral gray) passing into silvery white on upper tail-coverts and tail; 
secondaries tipped with white, and inner webs of primaries broadly 
edged with the same; outermost primary with outer web dark gray or 
blackish slate, the inner webs of three outer primaries white with a 
stripe of silvery gray next to shaft, the white extending to the extreme 
tip; lateral and lower portions of head and neck, lower hindneck, and 
entire under parts, including axillars and under wing-coverts, immac- 
ulate white, usually more or less deeply tinted with pink, especially 
on under parts of body; bill black, usually more or less reddish at 
extreme base (mostly red in pre-nuptial season); iris dark brown; 
legs and feet pure vermilion red or scarlet (in life). 
Adults in winter.—Similar to the summer plumage, but forehead 
and anterior portion of crown white, the latter shaded with grayish 
and indistinctly streaked with darker, only the orbital region, occiput, 
and nape uniform black. 
Young.—Pileum and nape pale buffy grayish, finely mottled or 
stippled with darker, and streaked, especially on crown, with dusky; 
' orbital region and upper portion of auricular region dusky or blackish; 
remainder of head, lower hindneck, and entire under parts white, the 
hindneck, and sometimes sides of breast, finely mottled with 
buffy grayish; back, scapulars, wing-coverts, rump, upper tail-coverts, 
and tail pale gray, the back and scapulars overlaid or washed with 
pale buff, irregularly mottled with dusky, each feather with a subter- 
minal V-shaped mark of dusky; primary coverts and primaries darker 
gray, edged with paler, the inner webs of the latter broadly edged with 
white; rectrices each with asubterminal V-shaped mark of dusky and 
with outer web rather darker grayish; bill brownish dusky; legs and 
feet dusky (in dried skins). 
Downy young—Upper parts pale grayish buffy or buffy grayish, 
thickly flecked or irregularly streaked with dusky; anterior portion 
of forehead uniform dusky; throat and lateral portions of head and 
neck dull grayish; rest of under parts immaculate dull white; bill 
brownish, tipped with blackish; legs and feet dusky. 
