329 



Table XII Concluded. 



Pastures 



English sparrow, 

 Meadow-lark. . . 

 Mourning-dove . 

 Field-sparrow . . 



Goldfinch 



Cowbird 



Horned lark . 



Crow 



Crow-blackbird . 



Vh 



«*H 



o 



o 



u 

 U 



.36 

 .42 

 .44 

 .44 

 .46 

 .66 

 .70 

 .92 



Meadows 



English sparrow 



Crow 



Field-sparrow . . 

 Mourning-dove . 

 Meadow-lark. . . . 

 Cowbird 



Vh 



Id 



& 

 o 

 O 



.07 

 .11 

 .11 



.44 



.78 



Conclusion. 



The circumstance that the data of this paper are summarized in 

 numerical tables must not be permitted to obscure the fact that they 

 merely present a fixed picture of a fleeting condition; that they are 

 to be taken only as numerical generalizations of the observations here 

 recorded, and do not, in themselves, warrant much by way of in- 

 ference beyond their immediate contents. The view of the autumnal 

 bird life of central Illinois which we get by their means is like a 

 short-time photograph of a changing scene — changing so rapidly, in- 

 deed, that the effects of its transformations are noticeable even in 

 the picture itself; for it is evident, especially from the list of species 



