462 NORTH AMERICAN FAUNA. [NO. 27. 



The species was not again seen until we were ascending the Atha- 

 baska on August 14, when a male was taken in dense woods near Big 

 Cascade Rapid. It was evidently a bird of the year. 



On August 18, 1903, in a ravine near Brule Rapid, Merritt Cary 

 saw a single bird of this species. He had a good view of it, and is 

 positive of its identity. 



The only previous record in the Athabaska region is that of Rus- 

 sell, who took a male at Fort Chipewyan, June 6, 1893.° Macoun re- 

 cords 3 specimens taken by Spreadborough at Edmonton, Alberta, in 

 May and June, 1897.' J 



Vireosylva gilva swainsoni Baird. Western Warbling Vireo. 



In 1901 the warbling vireo was first met with at our camp on 

 Slave River, 10 miles below the Peace, where it was found to be 

 rather common, and where three specimens were taken June 7 to 10. 

 It was afterwards noted at Smith Landing, June 15 and 17. 



In the summer of 1903 we first observed this species at Grand 

 Rapid, May 25. We noted it also below Little Buffalo River, May 

 26; at Cascade Rapid, where it was rather common, May 28; and 

 on the lower Athabaska, May 31 and June 1. We next saw it near 

 Smith Landing, June 10, and found it abundant on Smith Portage 

 and at Fort Smith, June 12, 13, and 14. While descending Slave 

 River between Fort Smith and Fort Resolution, we noted numbers 

 on June 15, 17, and 19, and we observed one at Fort Resolution, June 

 24. During their trip to the Mackenzie, my brother and Cary saw 

 a pair or two almost daily at Fort Providence, July 3 to 6; noted it 

 on the Nahanni Mountains on July 15, 17, and 18; and heard one 

 at Fort Wrigley, July 22. On their return trip they heard its song 

 at Fort McMurray, August 10. 



In 1904 I noted this bird only once, near the mouth of Nahanni 

 River, June 3. 



The warbling vireo was first recorded from the Mackenzie River 

 region by Ross, who took it at Fort Simpson/ Several specimens 

 from that place have been recorded by different authors, and one 

 taken there May 22, 1860, is still in the National Museum. J. Alden 

 Loring took a specimen at Banff. Alberta, in August, 1894. Macoun 

 states that Spreadborough first noted it at Edmonton, where it breeds, 

 on May 8, 1897; observed it in poplar woods from Edmonton to 

 McLeod River in June, 1898; and found it common from Lesser 

 Slave Lake to Peace River Landing in June, 1903. He records four 

 specimens from Edmonton.'' 



°Expl. in Far North, p. 26S, 1898. 

 6 Cat. Canadian Birds, Part III, p. 574, 1904. 

 c Nat. Hist. Rev., II (second ser.), p. 281, 1862. 

 d Cat. Canadian Birds, Part III, pp. 575, 576, 1904. 



