312 



here and there only such data for discussion as seem adapted to a 

 general treatment of the subject. 



From Table IV., showing the distribution of all birds without 

 distinction of species for the principal areas actually covered by this 

 inspection, we see that 2249 of these birds were found in pastures, 

 955 of them in corn fields, 454 in stubble ground, 199 in orchards, 115 



Table IV. General Distribution of all, Birds, by Crops, 

 Indiana L/iNE to Quincy 



Crop 



Corn 



Stubble 



Wheat 



Plowed ground 



Pasture 



Clover 



Timothy 



Millet 



Orchard 



Yards 



Swamp 



Timber* 



Miscellaneous 



*A11 forests "skipped" 



Acres 



1306.64 



680.56 



155.36 



105.66 



926.65 



79.08 



57.10 



17. 



46.70 



11.77 



47.16 



7.34 



78. 



Birds 



per sq. 



mile 



468 



429 



192 



430 



1551 



416 



531 



640 



2726 



6580 



1331 



785 



if high or dense. 



in meadows, 71 on recently plowed ground, and 46 of them on young 

 wheat. Taking into account the different acreages of these areas 

 and computing the number of birds per square mile in each, we have 

 2726 per square mile in orchards, 1 55 1 in pastures, 481 in meadows, 

 468 in corn fields, 430 on plowed ground, 429 on stubble, and 192 on 

 young wheat. A square mile of swamp land, if we may judge by 

 the forty-seven acres examined, would have contained a population 

 of 1331 birds; and a square mile of farmyards, 6580. Compared 

 by percentages of all the birds in each crop, 47 per cent, were in 

 pastures, 20 per cent, in corn, and 9 per cent, in stubble, the ratios 

 in other crops and situations ranging from 4 per cent. down. 



The above crops may be divided, from this point of view, into 

 four classes : young wheat, with less than 200 birds to the square 

 mile; corn, stubble, meadows, and plowed ground, with about 450 

 each; pastures, with over 1500; and orchards, with 2700 birds to 

 the like area. The fact that birds are nearly as common in old stubble 



