The Migration of Thrushes 



FIFTH AND CONCLUDING PAPER 



Compiled by Professor W. W. Cooke, Chiefly from Data 

 in the Biological Survey 



With drawings by Louis AGASSiz FuERTES and Bruce Horsfall 



TOWNSEND'S SOLITAIRE 



THIS species breeds throughout the Rocky mountain region from northern 

 Mexico and southern Cahfornia to the valley of the Yukon, near Circle 

 City, and the valley of the Mackenzie near the Nahanni Mountains; and 

 from the Pacific coast to w^estern Texas, western Nebraska and central Montana. 

 Since it winters as far north as southern British Columbia and central Montana, 

 its migrations are not extensive, and consist largely in passing from the winter 

 home in the valleys to the breeding grounds on the high mountains. Most of 

 the migration dates fall in the month of March. 



MOUNTAIN BLUEBIRD 



The Mountain Bluebird breeds north to southern Manitoba, southern Sas- 

 katchewan, Lesser Slave Lake and the upper Yukon; and winters north to central 

 Kansas and northern California. It is one of the early spring migrants, as shown by 

 the following dates: Northern Colorado, average, March 6, earliest, February 24, 

 1902; Cheyenne, Wyo., March 12, 1889; Custer City, S. D., March 17, 1897; Terry, 

 Mont , average, March 25, earliest, March 20, 1903; Columbia Falls, Mont., aver- 

 age, March 23, earliest, March 9, 1895; Rathdrum, Idaho, March i, 1903; Spo- 

 kane, Wash., March i, 1905; southern British Columbia, average, March 9, 

 earliest, March 3, 1906; Banff, Alberta, April 2, 1903; Medicine Hat, Sask., April 

 6, 1894. 



The latest date on which the species was seen in Los Angeles county, Cal., 



was March 14, 1895, and the earliest date of the return in the fall, October 31, 



1897. The last birds leave southern Manitoba, on the average, October 13, the 



latest date being October 16, 1900. The latest date at Columbia Falls, Mont., is 



November 6, 1896; and in southern British Columbia, November 6, 1888. 



Bird-Lore's Colored Plates 



With the publication of colored figures of the Solitaire and Mountain Bluebird, the 

 series of plates of North America Turdidse is completed. It is proposed now to take up the 

 Flycatchers, and the first plate of this series will appear in Bird-Lore for December. 



Much time is required in the preparation of these plates, and it is necessary now to select 

 the group which will follow the Flycatchers. We ask our readers, therefore, to write to the 

 Editor stating their choice of the next family to be treated. 



The delay in the appearance of this number of Bird-Lore is due to unexpected difficul- 

 ties in the preparation of this plate. — Ed. 



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