132 



WORTH AMEEICAN "WAKBLEK8. 



If there were only the United States records at hand, it would be 

 impossible to get a correct idea of the date of fall migration of the 

 Canadian warbler, chiefly because so little attention is paid in this 

 country to July and August bird movements. Few observers think 

 it worth while to begin making notes on southward movements of 

 birds before September, although for a large proportion of migrants 

 the beginning of the fall journey is several weeks earlier. A few 

 records made of the arrival of the Canadian warbler in fall are: Lanes- 

 boro, Minn., August 18, 1889; Grinnell, Iowa, August 20, 1886; 

 Chicago, August 16, 1896; Waterloo, Ind., August 16, 1891; Ger- 

 mantown. Pa., August 3, 1890; Englewood, N. J., August 7, 1886; 

 Washington, July 31, 1887; St. Louis, August 15; Asheville, N. C, 

 September 2, 1891; Leighton, Ala., August 18, 1891, and Bay St. 

 Louis, Miss. , September 11, 1899. Fall migration begins so early that 

 by the last of August the birds have appeared in southern Mexico, a 

 month later (September 29) have arrived at San Jose, Costa Eica," and 

 by November 27 have reached northern Peru. This gives a quite uni- 

 form rate of speed of 30 miles per day. Were it possible to suppose 

 that any one individual traverses the entire range of the species, such 

 a bird would either have to increase this speed or else spend the entire 

 year on the road. 



The month of September is the time of greatest abundance of the 

 Canadian warbler in Central America. The jsarties of the Biological 

 Survey noted its disappearance soon after the middle of the month 

 from Chiapas, and nearly all the records from Guatemala were made 

 in September. Hoffman found the species in September on the high- 

 lands of Costa Rica, and Cherrie found it most abundant on October 

 6 at San Jos^, Costa Rica. Records of the last migrants seen are 

 Fort McMurray, Athabasca, August 10, 1903, and August 12, 1904 

 Grand Rapids, Athabasca, August 20, 1901; Aweme, Manitoba, 

 August 30, 1901; Ottawa, September 5, 1890; Chicago, September 16, 

 1894; Waterloo, Ind., September 28, 1902; Petitcodiac, New Bruns- 

 wick, August 21, 1886; Pittsfield, Me., September 12, 1897; Amherst, 

 Mass., September 29, 1891; Englewood, N. J., October 2, 1886; 

 Renovo, Pa. (average of six years), August 14; Germantown, Pa., 

 October 1, 1889; Washington, September 25; St. Louis, September 

 22, 1885; Asheville, N. C, October 10, 1891, and October 19, 1894; 

 Ariel, Miss., October 14, 1897, and Bay St. Louis, Miss., October 15, 

 1899. 



687. Setophaga ruticilla (Linn. ). Redstart. 



Breeding range. — The summer range of the redstart extends over 

 27° of latitude, from 35° to 62°, and over 69° of longitude, from 54° 

 to 133° in southeastern Alaska (to 123° in the United States). The 



a Cherrie, Auk, VII, p. 337, 1890. 



