Vol. Xin Tones, Bird Migration in Ohio. 239 



1895 J •' 



The sprincr migration thus closely corresponds to the same 

 mi-ration in^Iowa, but with no movement in February and none 

 in June Yet it must be admitted that movements do often occur 

 in February. There are fewer well defined waves, and more 

 scattering records, except early in March and early in May 



Making allowance for the slight differences in the bird fauna 

 of the two places, the birds forming these waves are of about 

 the same species as those forming the corresponding waves in 

 Iowa The presence of the Song Sparrow, Robin, and Bronzed 

 Grackle all winter, and the absence of Ducks and Geese in the 

 migrations, would make a change in the individuals composing 

 the first wave, in any case. 



There is a tendency towards earlier movements at Oberlin than 

 at Grinnell, especially early in the season, the difference not 

 being so apparent later. The first wave is often later, however, 

 followed more closely by the second wave. 



With the small amount of material at hand it is not possible to 

 determine if there are any such groups as were found in the 

 Grinnell migrations. Notes taken during three years seem to indi- 

 cate that there are, but composed of somewhat different species. 

 Here as in Iowa, the most of the birds arrive m May, a li tie 

 more than one-half of the whole movement occurring m that 

 favored month. April is also M^ell filled. March suffers from the 

 lack of water birds. May absorbs the June movements. 



Were it possible to make the round of the whole country, it is 

 probable that the percentages for the different months wou d 

 closely correspond to those for Iowa. The nearness of Lake 

 Erie and the presence of rivers both east and west, have com- 

 bined to make some important records wanting. 



The nearest routes of maximum migration across the State he 

 a considerable distance westward, where there is a much less 

 expanse of water for the birds to cross to the Canada shore. 

 Hence, ours is a relatively small migration. It does not compare 

 wi h tl e Iowa migrations in point of the number of moving indi- 

 viduals. Scarcely any birds can be called at all abundant at 

 Oberlin. Many are common. _ 



I have noticed that the migrants at Oberlm rema.n rathe 

 longer than the same species did at Grinnell, and that more of 



