178 CONTRIBUTIONS TO THE NATURAL HISTORY OF ALASKA. 



021. Lanius borealis (Vieill). Northern Shrike. 



The Great Northern Shrike is found throughout the Yukon district. It is imperfectly migra- 

 tory as periods of excessively cold weatherimpel it toseek food in warmer localities. It is a resident, 

 breeding wherever found in thesummer. It rarely visits the immediate vicinity of Saint Michael's. 

 On oue occasion an individual was observed sitting on one of the large warehouses within the 

 Redoubt. 



Not observed elsewhere. 



646. Helminthophila celata (Say). Orange-crowned Warbler. 

 Two of these Warblers were shot among the weeds surrounding the Redoubt of Saint Michael's. 

 They are not common for they were the only ones ever seen at the place. As these specimens were 

 the only ones procured by me while in Alaska, and were obtained in the month of September, I am 

 led to conclude that they came from the interior, where they probably may have bred. 



652. Dendroica ^estiva (Grnel.). Yellow Warbler. 

 Specimens of the Summer Yellow Bird were obtained from several localities. It is common 

 at Fort Yukon, Nowikakit, Nulato and Mission on the Yukon River. At the Yukon Delta it is 

 occasionally found. It rarely visits the vicinity of Saint Michael's and then only in the fall while 

 it is migrating. 



655. Dendroica coronata (Linn.). Myrtle Warbler. 



The specimens of the Yellow-rump Warbler collected by me were obtained from Fort Yukon, 

 where they breed. 



They inhabit only the wooded portions of the district. 



I observed this Warbler at Nushagak, Bristol Bay, in June, 1878, where it was quite abundant 

 among the willow thickets on the banks of the river. 



661. Dendroica striata (Forst,). Blackpoll Warbler. 



This Warbler was obtained only from Fort Yukon on September 18, 1875, and again from 

 the same locality on May 28, 1877. It is not common at any time in that locality. 



Those dates must nearly represent the earliest appearance and probable latest stay in that 

 locality. 



675. Soiurtjs noveboracensis (Cmel.). Water Thrush. 



Several specimens of this Water Thrush were obtained at Saint Michael's in August, 1876. I 

 have never observed it in that vicinity at any time other that after the breeding season. 



The birds were quite gentle, and frequented the paths among the tall grass, searching for 

 worms and insects. They evidently were hatched in the interior and visited tha coast on their 

 fall migration. After the 25th of August none were to be seen. 



The Eskimo name of this bird is Che clung uk, derived from the note che-che-che. 



685. Sylvania pusilla (Wils.). Wilson's Warbler. 



A single specimen of the Black-capped Yellow Warbler was brought to me by a native, who 

 said he had shot it among some straggling willows, which skirted a lake, about a mile distant from 

 the Redoubt of Saint Michael's. 



It is not a common bird in that vicinity, occurring only in the fall migration. 



Other specimens were obtained from Fort Yukon and Nulato, where it is not rare. 



The bill was pale horn-color with darker tip; legs and toes pale; claws darker. 



[695.] Motacilla ocularis Swinh. Swinhoe's Wagtail* [See Plate XL] 

 At Attu Island, Alaska, I was looking out of my window on the morning of May 14, 1881, 



* As the specimen was not secured an accurate identification of the species cannot be made. It may have been 

 a $ of M. Ingots (Kittl. nee Teuim.), which breeds in Kamtchatka, for the female of this species can be distinguished 

 from M. oculaiis except by a most careful comparison of specimens; and as the latter has been taken within Lower 

 California, I have thought it preferable to record, my observation under this heading. 



