PABULA WARBLER. 



47 



Ontario gives the usual date of arrival as May 6 in southern Ontario, 

 May 10 in the Parry Sound district, and May 13 at Ottawa. 



The record of this warbler in the "West is very interesting. The 

 dates of first arrivals in spring in Texas are as follows: Vicinity of 

 the lower Rio Grande, March 20, 18Y7, March 18, 1887, March 13, 

 1897; Refugio County, March 13, 1899; San Antonio, March 26, 1889, 

 March 18, 1890, March 25, 1891; a few miles northwest of San Anto- 

 nio, March 20, 1880, March 25, 1900, March 22, 1901; Austin, March 

 13, 1890, March 18, 1893; Waco, March 10, 1900; Dallas, March 16, 

 1898, March 17, 1899. Those for Louisiana are of a quite different 

 sort, as is shown by the following table giving dates of first and sec- 

 ond arrivals noted and those on which the species became common: 



Spring records of panda warbler. 



The records show the average date of movement through Florida 

 on the east, Texas on the west, and Louisiana in the center. A com- 

 parison of the dates shows, first, that the parula warbler arrives in 

 Texas much later than in either of the other States, and hence does 

 not reach the Mississippi Valley by way of Texas; second, that it 

 arrives in northern Florida at least ten daj^s later than it attains the 

 same latitude in Louisiana. From these two facts it would appear 

 that Louisiana is reached by direct flight across the Qulf of Mexico. 

 The average date of arrival at New Orleans coincides closely with the 

 date when the first migrants arrive at the southern end of Florida. It 

 would seem that the birds of Mexico and Cuba are prompted to move 

 northward at the same time, but the flight over the Gulf of Mexico 

 being so much longer than that from Cuba to Florida, the Mexican 

 birds reach a higher latitude by their initial flight. 



The further migration northward in the Mississippi Valley is at a 

 much slower rate. The species consumes an average of twenty-eight 

 days in advancing from New Orleans to Helena, Ark. The later 

 migrants through Florida move more rapidly, and from the latitude 

 of Helena northward the migration in the Mississippi Valley is but 

 five days earlier than in corresponding latitudes on the Atlantic coast. 



