96 NOKTH AMERICAN FAUNA. [no. 19. 



and met with the birds sevcrtd times until August 21, when hirge 

 flocks were seen near Fort Yukon. 



At Glacier I found on June 7 a nest containing four eggs, varying 

 from fresh to several days incubated. It was very large, built of 

 sticks and moss and lined with dry grass, and was situated 15 feet 

 from the ground, near the top of a small spruce growing in dense 

 woods a short distance from the river. When I put my hand on 

 the tree, the female flew from the nest with a hoarse, cackling cry and 

 settled a few feet away; the male did not appear. The eggs average 

 1.25 by 0.84 inches and are nile blue sparingly spotted with ecru drab 

 and seal brown. 



170. Saxicola cenanthe. Wheatear. 



Osgood saw two 3'oung wheatears at Circle August 19, and secured 

 one. At the Aphoon mouth I shot one on August 27, which fell into 

 the river and was carried away by the rapid current, but I saw the 

 white rump plainly. 



171. Sialia arctica. Mountain Bluebird. 



We found a pair on Fifty-Mile River a short distance above Miles 

 Canyon July 10. The next day I secured the female and found the 

 nest with four well-incubated eggs in a hole about 8 feet from the 

 ground in a dead spruce in the midst of a l)urnt tract. July 22 I 

 shot a male near the point where Fifty-Mile River empties into Lake 

 Lebarge. Mr. Cautwell also found this species on Fifty -Mile River. 



