1926] Swarth: Birds and Mammals from ihe Atlin Region 111 



nest was near the top of an isolated spruce, on a branching limb, about 

 sixty feet from the ground. It was a huge mass of sticks, a platform 

 that had been flattened to such an extent that the young birds were in 

 plain sight from the ground nearby. On July 6 it held two young, 

 with feather rows showing through the down on the breast. Return- 

 ing on July 20 we found the young birds gone, but discovered them in 

 nearby trees. They had evidently just left the nest; wing and tail 

 feathers were not yet full grown, and they could make but short 

 flights. On August 11a second brood, again of two birds, was found, 

 obviously just out of the nest. These birds could fly but feebly ; when 

 found they were on the ground in dense spruce woods. One young 

 bird and one. parent were shot. 



Of the six specimens I collected four had crop or stomach or 

 both well filled. Two contained rabbit {Lepus wmericanus macfarlani) , 

 one held ground squirrel {Citdlus plesius plesms) and chipmunk 

 [Eutamias horecdis caniceps), and one held rabbit and chipmunk. 



During September, Harlan hawks were migrating in numbers. 

 They were seen near Atlin daily, and between Atlin and Teslin 

 (September 7 to 15) a number were observed drifting southward. On 

 September 21, I saw two, the last observed. 



Aquila chrysaetos (Linnaeus). Golden Eagle 

 Seen at Careross, May 22, and near Atlin on September 21, my 

 last day in the field. Occasional birds were encountered throughout 

 the summer, so the species may be assumed to breed in this general 

 region. Restricted mostly to the mountains, where presumably the 

 open country is more favorable to the eagle's mode of hunting than 

 are the heavily forested lowlands. 



Haliaeetus leucocephalus alascanus C. H. Townsend 

 Northern Bald Eagle 

 One was seen near Atlin, May 29; not otherwise observed. The 

 species has been found nesting in this region (see Anderson, 1914, 

 p. 12). 



Palco rusticolus rusticolus Linnaeus. Gray Gyrfalcon 

 An important discovery was the finding of this species, to all 

 appearances upon its nesting ground. On July 28, on the summit of 

 Spruce Mountain, Brooks first encountered a gyrfalcon, feeding upon 



