Pe eae Nggl 
213 
Next after the meadowlark comes the red-winged blackbird, (93 to 
the mile), prominent by reason of its numbers in northern and central 
Illinois. This is followed by the English sparrow (57), much the least 
abundant in the southern section, the field sparrow (47), mourning 
dove (37), dickcissel (29), goldfinch and quail (27 each), and ten 
others in numbers gradually diminishing from 26 to 10 to the square 
mile. The species are, as a whole, derived from the prairies as repre- 
sented in pastures and meadows, with only a minor invasion from forest 
or marsh. 
Most ABUNDANT BIRDS IN WASTE AND FALLOow LANDS, 
WHOLE State, SUMMERS orf 1907 AND 1909 
NUMBERS PER SQUARE MILE 
Meadowlark 142 
Red-winged blackbird 93 
English sparrow 57 
Field sparrow 47 
Mourning dove 37 
Dickcissel 29 
Goldfinch 27 
Quail 27 
Bobolink 26 
Bronzed grackle 20 
Kingbird 19 
Brown thrasher 17 
Bluebird 16 
Maryland yellow-throat 15 
Red-headed Rae 13 
Blue jay 11 
Crow 10 Oy 
Short-billed marsh wren 10 
Total , 616 
SUMMARY AND DISCUSSION 
A compact summary of our most general averages of the numbers 
of our most abundant birds, as found on distinguishable vegetation areas, 
is given in the following table, an examination of which will enable 
u to point out certain conclusions not otherwise readily arrived at. The 
totals at the bottom of the table show the relative densities of the bird 
population (both with and without the English sparrow) in the thirteen 
recognized situations and in the total area of the survey which stands 
for the state as a whole. 
