670 GEOLOGICAL SURVEY OF CANADA. 



taken on Rocky creek near the 49th parallel and on Frenchman 

 river ; it was common in the Cypress hills wherever there was brush, 

 and the same in the Milk river valley and along St. Mary river and 

 at Waterton lake; first seen at Edmonton, Alta., May 27th, 1897, 

 common and nesting in the willows by June ist; common from 

 Edmonton to the summit of the Rocky mountains in Yellowhead 

 pass in July, 1898, breeding in willow thickets on the borders of 

 marshes ; common from Lesser Slave lake to Peace River Landing, 

 lat. 56° 15', in June, 1903; quite common in the foothills from 

 Calgary southvv^ard; a nest containing four eggs was found on 

 Bragg creek on June 28th, 1897, in a tuft of grass, nest made of dry 

 grass ; this was a common species at Banff, within the Rocky moun- 

 tains in June, 1891. (Spreadborough.) Many of the references to 

 Saskatchewan and Alberta probably should go with arizela. 



Breeding Notes. — Breeds at Ottawa and Lake Nominingue, 

 100 miles north of it, from the middle of May to the middle of July. 

 Nests in swampy places and undergrowth, on or near the ground, 

 hidden among reeds, weeds and small bushes; they are made of 

 reed-stalks, grasses and leaves, lined with fine grass and sometimes 

 a few hairs; two nests were found in reed-plants having the form 

 of inverted cones five inches long. Nests average 4x3 and 2 x i . 50. 

 (Garneau.) Nests are built in low bushes close to the ground at 

 Ottawa, composed of dead leaves and grass, lined with fine grass, 

 hair and rootlets. Eggs 4 to 6, white, sparingly sprinkled at larger 

 end with brown. (G. R. White.) The nests I have seen contained 

 eggs the first week in June; the nest is well concealed, but I have 

 seen two, which were six or eight inches above the ground ; one of 

 these was in a small elm sapling, around which long rank grass grew ; 

 I could not assign the nest to any other species as the eggs were 

 similar to others I had seen and a male bird was hopping about in 

 the immediate vicinity. (Rev. C. J. Young.) ♦ 



6816. Pacific Coast Yellow- throat. 



Geothlypis trichas arizela Oberholser. 1899. 



Uncommon in the underbrush along the creeks in the Cypress 

 hills, Sask., and in the drier parts of the sloughs. Dr. Bishop re- 

 ferred all the birds taken to this sub-species. (A. C. Bent.) Pacific 



