176 IT. S. NATIONAL MUSEUM BULLETIN 217 



rare along the Yukon, it is to be suspected that they cross the Alaska 

 Range from the Gulf toward the upper Yukon and Porcupine. 



The onomatopeic Eskimo name for oldsquaw is close to the Indian 

 name, Ahaluk. It and the name for great gray owl are the only two 

 in which I can find resemblances between Old Crow Indian and 

 Kobuk (forest-dwelling) Eskimo names for 90 species of birds known 

 in both areas. 



Histrionicus histrionicus (Linnaeus) 



1 male May 29 weight 682 g. very fat testes 11x21.5, 9x14.5 



mm. 



We are indebted to Philippe Dicquemare for bringing us the harle- 

 quin he shot on the river near the village. It was our only sight of this 

 duck, but Joe Kay, who named it Tsi tut kwilik, said it was familiar to 

 him in summer on the mountain streams. The testes were approaching 

 breeding size. 



In length of wing, depth of bill, and length of tarsus we could see 

 no distinction between western and wintering harlequins. The four 

 specimens from Anaktuvuk and one from Old Crow cannot be assigned 

 to a racial division. 



Melanitta deglandi (Bonaparte) 



1 male 



Junel 



weight 1564 g. 



very fat 



testes 8x17, 8x18 mm. 



1 male 



June 14 



weight 1649 g. 



medium fat 



testes 11x26, 12x30 mm. 



Imale 





weight 1663 g. 



medium fat 



testes 10x20, 9x25 mm. 



The earliest white-winged scoters were seen on May 20. In the next 

 10 days more flocks were seen each day. During this period none 

 were recorded as containing more than 30 scoters and they often in- 

 cluded a minority of surf scoters. These flocks regularly appeared 

 from the west and flew steadily eastward, usually 30 or 40 yards above 

 the river, in rather compact and little changing order. The main 

 migration of scoters was later than those of pintails, mallards, and 

 widgeon. Migrating flights of white-winged scoters were even 

 steadier on course than flights of oldsquaws. 



Until June 15 flocks of from 10 to 30 white- winged scoters were not 

 uncommon, but no trend in the direction of their flights could be seen 

 after June 5. On Jime 3 I watched several groups of six or eight 

 scoters, mostly white- winged as they floated down river for about a 

 mile with the current and then flew upstream to repeat the course. 

 Pacific loons and an occasional red-throated loon floated nearby with- 

 out apparent interspecific interest. 



On June 15 males and females appeared associated in pairs. The 



