APPENDIX G 367 



species was next observed on our return to the Slave delta, Sep- 

 tember 25, and was seen also on lower Slave River, September 

 28, and near the mouth of Salt River on October 3. While as- 

 cending the Athabaska we observed several flocks on Slave 

 River, October 11, 12 and 13. 



Charitonetta albeola (Linn.). Buflle-head. 



The buffle-head was observed on the Athabaska, near Fort 

 McKay, on May 30, near the head of the Nyarling on July 11, 

 and on Little Buffalo River on July 12. It was also a common 

 species in the store-houses at Fort Chipewyan in early October. 



Harelda hyemalis (Linn.). Old-squaw. 



Migrating flocks of old-squaws were common and rather 

 noisy on the Athabaska River, near Athabaska Landing, on 

 May 15 and 17. This species was next observed on its breeding 

 grounds on Artillery Lake, north of the tree limit, on August 7, 

 on Casba Lake on August 8, and on the southern part of Clinton- 

 Golden Lake on August 9. We found a number of birds ac- 

 companied by unfledged young on the small lakes, near the head 

 of Back River, on August 21; and also observed the species 

 along the south shore of Clinton-Golden Lake on August 28, 

 and on Artillery Lake, at the tree limit, September 4. On Sep- 

 tember 10, while traversing Pike's Portage between Artillery 

 and Great Slave Lakes, we saw flocks of this species flying south- 

 ward; and we found the species common on Great Slave Lake, 

 between its eastern extremity and Caribou Island, September 

 17 to 20. These were the last seen in life, but the species was 

 common among the ducks preserved for winter use at Fort 

 Chipewyan. 



Oidemia deglandi Bonaparte. White-winged Scoter. 



This species was first observed on the lower Athabaska on 

 June 4. We next noted it on Artillery Lake, near the tree limit, 

 on September 8, noting four; and saw it last on Great Slave 

 Lake, near Caribou Island, on September 21. 



