492 NORTH AMERICAN FAUNA. [no. 27. 



on the Simpson Islands, 40 miles northeast of Fort Resolution. On 

 their return trip in the fall Alfred E. Preble and Merritt Gary saw 

 two individuals, collecting one, near Athabaska Landing, September 

 12, and observed another 50 miles south of Athabaska Landing Sep- 

 tember 23. During my trip northward from Fort Rae I noted this 

 species on Lake Hardisty August 1G, 18, and 10, and a few miles 

 south of MacTavish Bay August 24. 



In the spring of 1004 J. W. Mills took a specimen at Willow River, 

 near Fort Providence, on May 17. I did not note it at Fort Simpson 

 and first saw it at Sans Sault Rapid June 10, when I collected a 

 female. 



Baird recorded specimens from Fort Simpson, La Pierre House, 

 and Fort Anderson." A specimen from Fort Simpson, September 10, 

 I860; one from Fort Anderson, taken with eggs in June, 1864; and 

 one from Fort Good Hope, May 31 [1862], are now in the National 

 Museum. In the Anderson River region MacFarlane found the spe- 

 cies very abundant, both in the wooded country and in situations 

 where no trees grew, some nests being necessarily placed on the 

 ground, contrary to the usual habit. One nest was found on the 

 banks of Wilmot Horton River.^ In notes sent to the Smithsonian 

 he recorded the species as tolerably numerous at Fort Anderson on 

 May 28, 1865. Macoun, on the authority of Raine, records several 

 sets of eggs taken by Messrs. Stringer and Young near the mouth of 

 the Mackenzie. Seton records the species from Fort Reliance and 

 the south end of Artillery Lake/' 



Hylocichla ustnlata swainsoni (Cab.). Olive-backed Thrush. 



This thrush is abundant over the wooded country, where during 

 the short Arctic summer its song is heard nearly throughout the 

 entire twenty-four hours. In 1001 it was first noted at Fort Chipe- 

 wyan, May 24, and was seen or heard almost daily until June 4, 

 during our stay in the vicinity. After leaving Fort Chipewyan we 

 everywhere found it common and heard its song almost continually 

 day and night. We noted it daily between Athabaska Lake and 

 Fort Smith, June 5 to 18, and found the first nest, containing four 

 eggs, 10 miles below Peace River, on June 10. The species was com- 

 mon at Fort Smith, where we noted it almost daily, June 10 to 29, 

 and took a nest containing three eggs on June 21. We noted num- 

 bers on Slave River, June 20 to July 2. and saw and heard sever;:! 

 on July at Fort Resolution, where Alfred E. Preble also noted the 

 bird July 10, 11, and 22. I took- a specimen at Fort Rae July 20. 

 but did not hear its song after leaving Fort Resolution. 



" Rev. Am. Birds, p. 23, June, lsc.4. 

 &Proc. U. S. Nat. Mus.. NIV. p. 11~>, 1891. 

 'Cal. Canadian Birds, Part HI, p. 7<)!>, 11)04. 

 ''Auk, XXV, p. 73, 1908. 



