LONG-TAILED DUCK 349 



Japanese: Korigamo, Shima-aji. 



Aleutian Eskimos: A-lang-uk. 



Alaskan Eskimos: Ahadlin, Ad-le-guk-lu-luk, A-hau-lin, Sou-sou-sally, Adyigia. 



Chipewyan Indians: A-ha-lik. 



Cree Indians: Ca-ca-wee, Ha-ha-way. 



Labrador and Baffin Land Eskimos: Aggek, Aggik, Aggit, Angek. 



Greenland Eskimos: Aglek, Agdlek, Agterajik, Ugley. 



DESCRIPTION 



Adult Male: Forehead and front part of face pale gray; on each side of the neck a large oval patch 

 dark brown in color except at its lower edge, where it is paler; remainder of head and neck pure white 

 to pearly white. Mantle white, continuous with white of neck, but at its posterior border it is black 

 merging with the black of the breast. Inner and upper scapulars white or pearly gray; outer ones, back, 

 central part of rump and upper tail-coverts black. Two central tail-feathers very long and acutely 

 pointed, and the tail dark brown in color, except the outer feathers which are white. Breast uniform 

 rich dark brown, sharply contrasted with the white of the lower abdomen and under tail-coverts. The 

 flanks are light pearly gray. Outer wing-coverts, secondaries and primaries dark brown to nearly 

 black. Under wing-coverts brown; axillars brown. 



Iris hazel to reddish hazel, more amber color in winter. Bill, basal half and nail black to blackish 

 lead-color; remainder orange yellow to pale pinkish orange. Legs and feet lead blue to bluish gray, 

 darker about joints and along back of leg; webs black. 



Wing 218-240, but few over 230 mm.; bill 26-29; tarsus 33-38. 



Weight 1 pound, 8 ounces to 1 pound, 10 ounces (0.68 to 0.73 kilograms). 



Adult Female: Forehead, top of the head, and an irregular patch on the side of the neck, black. 

 Remainder of head and neck white. Mantle and scapulars black-brown to rather light brown and 

 somewhat variable in tone. Back, rump, central upper tail-coverts and center of tail dark brown to 

 black. Outer tail-coverts and outer tail white. Upper breast for a narrow band pale brownish shading 

 into the white of the rest of the lower parts. Wing brown as in the male. 



Iris dark hazel to yellow. Bill gray-black to greenish slate-color, a little darker toward the tip; 

 sometimes tinged with dull orange. Legs and feet greenish or bluish slate-color, darker on the joints. 



Wing 200-215 mm.; bill 25; tarsus 32. 



Male and Female est First (Juvenal) Plumage: Distinguished by the uniform dull-gray appear- 

 ance of mantle and scapulars. The feathers of the upper parts have no light-colored or brownish 

 edges, while the throat and sides of the head are dull gray and not white. There is an irregular 

 whitish area around and behind the eye, but no sharply contrasted face-pattern. The tail-feathers 

 are blunt at the tips. 



Immature Male: Although the head and neck regions may develop almost to the adult stage by 

 early winter, the mantle and ornamental white scapulars come in very gradually, and are not usually 

 complete until late winter. The uniform brown breast-shield is never complete the first winter nor are 

 the long central tail-feathers acquired as a rule. These central tail-feathers may be renewed but they 

 do not grow to full length. Most of the under parts, tail and wings remain as in the first plumage 

 until March or April, when a change into the first summer plumage begins. Backward specimens, 

 essentially as in first plumage, are found throughout the winter. Eye brown or hazel. 



