380 APPENDIX G 



which could be referred to no other species, circled once about 

 our boat. Although the time was not far from midnight the 

 subarctic twilight, which prevails at this season, allowed a good 

 view of the bird. The species was observed on but one other 

 occasion — ^while we were descending the Nyarling on July 11, 

 when a fine individual was seen perched on a low stub near the 



Cryptoglaux funerea richardsoni (Bonaparte). Richardson's 

 Owl. 

 The soft musical notes of this owl were heard for some time 

 during the evening of May 29 near our camp on the Athabaska, 

 about twenty miles below Fort McMurray. 



Bubo virginianus subareticus Hoy. Arctic Horned Owl. 



The great horned owl was first noted on the Athabaska, about 

 twenty miles below Fort McMurray, May 29. It was next 

 observed near Poplar Point on the lower Athabaska on June 2. 

 Judging by the numbers seen the species was abundant along 

 the Little Buffalo River, for we saw no less than ten individuals 

 during our voyage down that stream on July 7. The species 

 was also noted near the head of the Nyarling on July 11. We 

 saw the last one during our northward journey, perched on the 

 granite cliffs of Stony Island, east of Fort Resolution, on July 17. 



The species was next observed in the delta of the Slave River 

 on the afternoon of September 25. While we were ascending 

 the Athabaska we heard one, during the night of October 12, 

 utter a long wail resembling the note of the barred owl. Later 

 we saw single birds near Fort McKay on October 15, and above 

 Mountain Rapid on October 18. Another individual seen below 

 Brul6 Rapid on October 22 was being vigorously assailed by a 

 pair of Canada Jays, and one seen near La Biche River on Octo- 

 ber 31 had a good-sized fish in its talons when it was started from 

 the margin of the river. This species was last observed on Atha- 

 baska Landing on November 1. 



