APPENDIX G 401 



was near the eastern extremity of Great Slave Lake, where we 

 saw one on July 25. 



Dendroica coronata (Lmn.). Myrtle Warbler. 



The yellow-rumped warbler was first noted on the Athabaska, 

 near Fort McMurray, on May 28, when one was collected. 

 Others were observed at Fort Smith on June 13, and near the 

 head of the Nyarling on July 11. During our trip to the east- 

 ward of Fort Resolution we noted the species near the western 

 end of Caribou Island on July 20, and on Pike's Portage, near 

 the eastern end of Great Slave Lake, on July 28. At our camp 

 on Artillery Lake at the tree limit a specimen was collected on 

 September 3. A deserted nest seen in a small spruce shows that 

 this point is a breeding station. During our homeward trip, two 

 individuals, the last observed that season, were seen at Fort 

 Reliance on September 16. 



Dendroica striata (Forster). Black-poll Warbler. 



Although this species occurs in the Slave River region, we did 

 not observe it there, but saw the first one on Pike's Portage on 

 July 30. Already birds attending young, which had just left the 

 nest, were seen near our camp at the tree limit on Artillery Lake 

 on August 5, the last date recorded. 



Seiurus aurocapHbis (Linn.). Oven-bird. 



The familiar song of the oven-bird was heard on the lower 

 Athabaska on June 4. We noted the species on but one other 

 occasion, near the upper part of Little Buffalo River on June 26. 



Seiurus novehoracensis notahilis Ridgway. Grinnell's Water- 

 Thrush. 

 The water-thrush was first noted near Fort McKay on May 

 31, and was again seen on the lower Athabaska on June 4. Ob- 

 served also at Fort Chipewyan, June 5; near the mouth of Peace 

 River, June 6, and near Smith Landing, June 7 and 10. Other 

 points and dates of observation follow: Fort Smith, June 14 to 

 22; Buffalo River Portage, July 6; Little Buffalo River, July 7; 



