The Migration of Vireos 



FIRST PAPER 



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

 in the Biological Survey 

 With drawings by Louis Acassiz Fuertes 



PHILADELPHIA VIREO 



This is one of the rarest Vireos in North America, and though not many 

 notes have been received on its movements, yet the data at hand seem to indicate 

 that from its winter home it enters the United States much later than most species, 

 and in its passage thence to its summer home is one of the most rapid migrants. 



SPRIXG MIGRATION 



PLACE 



Elm Grove, W. Va.. . 

 Washington, D. C . . 



Erie, Pa 



Troy, N. Y 



Portland, Conn 



Mollis, X. H 



Waterville, Me 



St. Louis, Mo 



Carlinville, 111 



Tiffin, O 



Southern Michigan.. 



Sioux City, la 



Lanesboro, Minn 



Aweme, Man 



Chippewyan, Alberta. 



FALL MIGRATION 



The average date of arrival in the fall at Chicago, 111., is September 3, and 

 the earliest date August 21, 1895; the average at Washington, D. C, is September 

 13, and the earliest, September 8, 1896. Some other dates of fall arrivals are: 

 Lanesboro, ]Minn., August 18, 1888; Forest City, la., August 31, 1901; Guelph, 

 Ont., August 27, 1903; Erie, Pa., September 6, 1900; Cambridge, Mass., Septem- 

 ber 7, 1875; ^t- Louis, Mo., September 13, 1901. An unusually early migrant 

 was seen .\ugust 2, 1893, at Hester, La. 



FALL MIGRATION 



PLACF. 



Dublin, N. H 



Erie, Pa 



Washington D. C . . 



Chicago 111 



Dunklin County, Mo. 

 New Orleans, La 



Number 



of years' 



record 



Average date of 

 the last one seen 



September 21 

 September 26 



Latest date of the 

 last one seen 



September 29, 1897 

 September 25, 1900 

 September 22, 1889 

 September 27, 1894 

 October 4, 1895 

 October lo, 1896 



(78) 



