114 University of California Publications in Zoology [Vol. 30 



are mostly white. Altogether, the black-and-white appearance of these 

 owls is in striking contrast to the tawny-colored lagophowus, as repre- 

 sented by a series from the upper Skeena Valley, British Columbia. 

 Nos. 44739 and 44740 are two juvenals, taken with the male parent 

 (no. 44741). The two young are quite unlike, one being much darker 

 than the other ; the pale colored bird is the more rufeseent of the two. 



Two specimens were collected that are like loigophonus from the 

 Skeena Valley. One of these (no. 44738, adult male, June 5) with 

 hardly a doubt was not a breeding bird. Of the second (no. 44742, 

 adult male, August 4) it cannot be said with any certainty whether 

 or not it had bred in the region. These two individuals may be, as 

 their appearance indicates, examples of lagophonus that had wandered 

 beyond the usual confines of that race. The breeding birds in the 

 series are most nearly like specimens of subwroticMs from the Yukon 

 region, a short distance to the northward. The Atlin region forms the 

 southern boundary of the Yukon drainage, and it is to be expected 

 that the distribution of some Yukon species should be co-extensive 

 with this drainage system. 



Horned Owls were fairly common in the Atlin region ; hooting could 

 be heard almost every night. One bird was seen at Lake Teslin, 

 September 12. Of the six horned owls collected, four had their 

 stomachs filled with remains of rabbits. Those of the other two were 

 empty. 



Surnia iilula caparoch (Miiller). Hawk Owl 



On May 29 a hawk owl was found in a tract of spruce timber at the 

 northern base of Monarch Mqjintain, and as the bird was seen sub- 

 sequently at the same place on several occasions, it may have been 

 nesting there. This was the only one seen until the end of the summer. 

 On August 19' Brooks shot a young bird, in first winter plumage 

 throughout save for remr^ants of down about the head, and from then 

 on others were seen at frequent intervals. 



The three birds collected, two by Brooks, the other by myself 

 (no. 44744, male, September 19), are alike and are extremely dark 

 colored. Compared with a large series from northern Alaska, the 

 Atlin specimens are more slaty above and less reddish below. These 

 color differences cannot be explained as illustrating seasonal change 

 or sexual or age variation, but neither can they with any certainty be 

 correlated with any geographic area. 



One hawk owl had in its stomach the remains of a Peromyseus. 



