586 GEOLOGICAL SURVEY OF CANADA. 



in a willow thicket at York Factory, July i6th, 1901, and the 

 species was again noted near Pine Lake, September 13th and at 

 Duck Point, Playgreen Lake, September 19th. {E. A. Prebles.) 



Observed during the fall migration, in September, along the 

 Mouse (Souris) River, where it was abundant. {Coues.) Common 

 summer resident in woodlands, in Manitoba; evidently breeding in 

 the woods around Carberry. {Thompson- Seton.) First seen at 

 Avenue, Manitoba, on May 12th, 1903, was common on, the 17th 

 and disappeared on September i6th. A common breeding 

 species. {Norman Criddle.) This is a rare summer migrant at 

 Indian Head, Assa. It was first seen at Indian Head, May 

 20th, 1892, and disappeared on the 25th; first seen at Medicine 

 Hat, Assa., May 9th, 1894, common by the iSth, and were 

 all gone by the 20th. {Spreadborough.) North to Fort Reso- 

 lution on Great Slave Lake ; rare. {Ross.) This is one of the 

 rarest warblers that breeds on the Anderson River where four or 

 five nests were found containing from four to six eggs. The 

 nests were made of hay or grasses, lined with deer hair, feathers 

 and finer grasses, and were found on the ground in ihe shade of 

 a clump of dwarf willow or Labrador tea. {Macfarlane) Through- 

 out the wooded region of northern Alaska, from the British 

 boundary line west to the shores of Behring Sea, and from the 

 Alaskan range of mountains north within the Arctic Circle as far 

 as the tree limit, this species is a summer resident. {Nelson.) 

 Two individuals of this species were shot among the weeds sur- 

 rounding the redoubt at St. Michael., They are not common as 

 they were the only ones ever seen at that place. {Turner.) Two 

 specimens taken at Ducks were of this form. {Streator.) East 

 and west of Coast Range; a summer resident. (Fannin.) Tolerably 

 common during the migrations at Chilliwack. A scarce sum- 

 mer resident in the Cariboo district, of B.C. ; both old and young 

 birds showed typical celata. {Brooks^ Five specimens from the 

 interior of British Columbia are distinguishable from the coast 

 form which does not appear to cross the Coast Range. {Rhoads.) 



Osgood took an adult male at Caribou Crossing, Lat. 60°, B.C., 

 June 26th, 1899; ^ '^ook a female and two young 20 miles below 

 Fort Selkirk, July 27th, and a young one near Dawson, August 

 2nd. Osgood secured an adult and a young one at Camp David- 

 son, August 5th and another was seen near Fort Yukon, Alaska, 

 August 2ist; all taken were in willows or alders close to the water. 



