338 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
axillars and under wing-coverts white, the former narrowly barred 
with brownish gray, the latter barred with darker gray or dusky or 
with irregular V-shaped marks of the same; inner webs of primaries 
brownish gray, the proximal portion indistinctly edged with pale 
gray or grayish white, or minutely freckled with the same; bill black, 
the basal portion of mandible more brownish; iris dark brown; legs 
and feet yellow. 
Winter plumage.—Upper parts gray, sometimes nearly uniform 
but usually slightly broken, especially on scapulars and wing-coverts, 
with transverse spots of dusky and whitish edging or dots along edges 
of the feathers: head, neck, and chest nearly uniform light gray, 
the chin, throat, and supraloral stripe white; otherwise as in summer. 
Young.—Similar to the winter plumage, but the paler markings 
on upper parts more or less tinged with dull ochraceous or pale brown 
or dull clay color. 
Adult male.—Wing, 149-163 (153.5); tail, 61-67 (62.8); exposed 
culmen, 35-38 (36.4); tarsus, 45.5-55.5 (50); middle toe, 27-32 (28.8).* 
Adult female.—Wing, 149.5-157 (155.8); tail, 55-66 (63.2); ex- 
posed culmen, 30-39 (35.5); tarsus, 46.5-52 (50.3); middle toe, 28-30 
(28.9).° 
Breeding from northern Quebec and southern Saskatchewan (for- 
merly southward to Ontario County, New York, Cook County, Illi- 
nois, and Heron Lake, Minnesota?) to southern Ungava, central 
Keewatin, northern Mackenzie, and northwestern Alaska (Kotzebue 
Sound and Kowak River); migrating southward over the whole of 
United States (much less plentifully west of Rocky Mountains), 
Middle America (including West Indies and Bermudas) and South 
America to Chile (Santiago; Sacaya, Tarapacé; Huasco; Caracosa) 
and Patagonia (Chupat Valley; Rio Sengel; Gregory Bay, Straits of 
Magellan); wintering northward, at least occasionally, to Bahamas, 
4 Fifteen specimens. b Ten specimens. 
‘ Ex- ' 
Locality. Wing. | Tail. Sg Tarsus. micas 
men. 
MALES. x 
Six adult males from. Atlantic coast United States (migrants)..) 151 62, 2 36. 4 48.9 28, 2 
Six adult males from Mackenzie (breeding) 63.6 36.4 51.1 29 
Three adult males from Alaska (breeding)..... 63.5 36.4 50.8 29,2 
FEMALES. 
Four adult femalesfrom Atlanticcoast United States(migrants).| 155 62.5) B58) Sha 29.1 
Two adult females from Mackenzie (breeding)................. 153 60 36 49 29 
One adult female from Alaska (breeding)............-.-.-...0- 163 66 37 53 28.5 
Two adult femalesfrom Minnesota (1) and Iowa (1) (migrants)..| 155 64 33 49.5 29 
