The Migration of North American Kinglets 



Compiled by Prof. W. W. Cooke, Chiefly from Data in the Biological Survey 



With a Drawing by Louis Agassiz Fif,rtf:s 

 (See Frontispiece) 



KENNICOTT WILLOW WARBLER 



Using the name of the Kennicott Willow Warbler for the bird of both the 

 Eastern and the Western Hemispheres, the species has a wide distribution in 

 the breeding season from Finmark to northeastern Siberia and south to Mon- 

 golia and southeastern Siberia; on the Alaska side it breeds from the Kowak 

 River south to the Nushagak River. It deserts the Western Hemisphere 

 entirely in winter, and ranges south at this season to China, the Indo-Chinese 

 Provinces, Formosa, Malay Peninsula, and Borneo. It is strictly migratory, 

 but almost nothing has been recorded concerning its times of migration. It 

 was taken at Marcova, Siberia, May 28, 1901, and arrived at Nijni Kolymsk, 

 near the Arctic coast of Siberia, May 30, 191 2. It is probable that the spring 

 migration on the eastern side of Bering Sea occurs at approximately the same 

 . time, but there seems to be no record in Alaska earlier than June 14, when one 

 was seen near the mouth of the Kowak River. The latest date in Alaska is 

 that of several specimens taken August 31, 1877, at St. Michael, and August 

 26, 191 1, on the Kokwak River. 



GOLDEN-CROWNED KINGLET 



The winter home of the Golden-crowned Kinglet is in the central and 

 southern part of the United States, but so many individuals remain, at this 

 season, in the northern states and even in southern Canada that it is difficult 

 to judge as to "when spring migration really begins. Two forms of the Golden- 

 crowned Kinglet have been separated — an eastern, satrapa, ranging west to the 

 plains, and a western, olivaceus, inhabiting the Rocky Mountains and the 

 district thence to the Pacific. 



SPRING MIGRATION 



PLACE 



Number 

 of years' 

 record 



Ballston Spa., N. Y 



Branchport, N. Y 



Lockport, N. Y 



Boonville, N. Y 



Alfred, N. Y 



Paradox, N. Y. (near). . . . 



Hartford, Conn 



Southern New Hampshire 



St. Johnsbury, Vt 



Portland, Me 



Montreal, Canada 



(118) 



Average date of 

 spring arrival 



April 7 

 April 1 5 

 April 14 

 April y 

 April 7 

 April 1 7 

 April 2 

 April 12 

 April 20 

 April 10 

 April 17 



Earliest date of 

 spring arrival 



March 29, iqo8 

 Jan. 2, 189J 

 January 9, 1891 

 April I, 1903 

 March 28, 1908 

 April 4, 1890 

 January i, 1911 

 February 13, i8gS 

 March 31, 1905 

 January 15, i89() 

 March 28, 1908 



