90 NORTH AMERICAN FAUNA. [no. 19. 



Osgood near the Nordenskiold Rivor July 22, and family parties were 

 often found in the alders and willow thicliets between the Felly River 

 and Circle. I took a young from a small flock 15 miles above Fort 

 Yukon August 21, saw one at the Aphoon mouth August 28, and a few 

 I thought this species at Hendricks Station August 25. Birds from 

 the Yukon Valley do not differ from those of the Alaska coast. A 

 young female is duller above and more buff'y below than the young 

 female of D. cestiva. 



140. Dendroica coronata hooveri.' Hoover Warbler. 



We found Hoover warblers common at Skagway, Glacier, Log 

 Cabin, and Cariliou Crossing, and also noted them at Haines, Bennett, 

 Lake Tagish, Miles Canyon, White River, Sixt3'-Mile Creek, and 12 

 miles above Circle. At Skagway May 31 they were still in flocks, 

 but at Glacier June 4-10 they seemed to be mated and settled for the 

 summer. At Log Cabin we found a flock June 15, but live days later 

 those still remaining there were beginning to nest. A small flock seen 

 on an island near Sixty-Mile Creek August 1 showed that the return 

 migration had begun. I took a .young in striped plumage August 1. 

 Adult males average paler below than typical D. coronata^ the black 

 markings being narrower, thus giving an effect of broad longitudinal 

 markings rather than black clouding on the chest. Eigiit specimens 

 of both sexes average slightly larger in length of wing and tail than 

 the corresponding sexes from eastern and central United States. In 

 six males, the exposed culmen averages 0.02 inch longer than in males 

 from Connecticut, but the bill from nostril averages the same, as do 

 both measurements in females. In juvenile plumage liooveri is darker 

 than coronata^ the black markings are broader and blacker, both 

 above and below, and the brownish edgings to the feathers greatly 

 restricted— entirely wanting on the lower parts and middle back. 



147. Dendroica striata. Black-poll Warl)ler. 



At Log Caliin June 15 this species was common, but on my return 

 elune 20 I saw onl}^ one pair — which I secured — and one other male. 

 July 5 I took a male at Lake Marsh. Two birds taken at Caribou 

 Crossing are somewhat smaller than average specimens from Dakota 

 and Connecticut. 



148. Dendroica townsendi. Townsend Warbler. 



Osgood took a male at Skagway May 31. At Glacier it was tolera- 

 bly common in the dense woods of spruce and fir, and unquestionably 

 nesting; altogether we noticed about twenty individuals during our 

 stay. Osgood took an adult at the southern end of Lake Marsh Jul}^ 

 1, and I an adult female and young female on the west shore of Lake 



' Bull. Cooper Ornith. Cluli, I, 82, 1899. 



