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694 GEOLOGICAL SURVEY OF CANADA. 
winter. I also took this species on the divide between Nicola 
and Okanagan valleys, the most westerly point I have observed 
it. Abundant in the heavy spruce timber and on high elevations, 
in winter, in Cariboo district, B.C. (Brooks.) Rocky Mountains, 
from Liard River south into Montana. (Rhoads in The Auk, Vol. 
X., p. 331.) An adult male was taken at Homer in June, and two 
specimens on September 12th, I901, in first winter plumage. Not 
common but seen at all placesvisited on the Kenai timber belt in 
Alaska. It was usually found in the dead spruce groves of the 
more open country. (Chapman.) 
740c. Yukon Chickadee. 
Parus hudsonicus evura COUES. 
We took the Yukon chickadee at Caribou Crossing, June 27th; 
Lake Tagish, June 30th; Lake Marsh, July 5th, and Lake Lebarge, 
July 14th; and after reaching Thirty-mile River, July 19th, found 
it regularly distributed in families or large flocks, all the way to 
Fort Yukon, 15 miles above which I sawa flock, August 21st. At 
St. Michael I took a young female in first winter plumage, Sep- 
tember 20th. Young able to fly were first taken, July 5th, and 
moulting birds, August 13th. We took adults in full moult, June 
27th, and one in which the moult was almost completed, July 24th. 
(Lishop.) At our winter camp on the Kowak, Kotzebue Sound, 
Alaska, this species was common up to September. After that 
date and up to the first of April, but one or two at a time were 
seen and then only at long intervals. Early in September, groups 
of four to seven were noted nearly every day in the spruces 
around the cabin. Those chickadees observed during the winter 
were all in the dense willow thickets along Hunt River. By the 
first of May the chickadees were back again roving through the 
woods in pairs. Old woodpecker-holes were selected as nesting 
sites, and I spotted nests in process of construction by the 15th 
May, but through various mishaps I failed to secure any eggs. 
( Grinnell.) 
741. Chestnut-backed Chickadee. 
Parus rufescens TOWNS. 1837. 
Very common in the woods at Hastings, Burrard Inlet, B.C., in. 
April, 1889; none were seen at Agassiz, about 50 miles up the 
F aser River in May; an abundant resident on Vancouver Island, 
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