193 
THE MOST ABUNDANT Birps, SUMMERS oF 1907 aND 1909 
Per cent. of Ranking as to 
Number seen all birds seen numbers 
Sueciee 1907 1907 1907 
1907 1909 and |1907 |1909 jand |1907 | 1909 | and 
1909 1909 1909 
English sparrow |1414 | 4239 5653 | 18.2 | 23.6 | 22.1 1 1 ik 
Meadowlark 1025 1434 | 2459 | 13.2 8.0 | 9.6 2 4 3 
Bronzed grackle* 900 | 2455 3355 | 11.6 | 13.6 | 13.0 3 2 2 
Mourning dove 461 670 1131 6.0 3.8 4.4 4 5 5 
Dickcissel 393 353 746 5.1 2.0 2.9 5 11 8 
Red-winged black- 
bird 347 573 920 4.5 S25 o.o 6 7 6 
Prairie horned 
lark 296 414 710 3.8 2.3 2.8 7 9 9 
_ Flicker 197 419 616 2.5 2.3 2.4 8 8 10 
- Robin 194 417 611 2.5 2.3 2.4 4) 10 ial 
Field sparrow 186 294 480 2.4 1.7 1.9 | 10 12 12 
Goldfinch 158 231 389 2.0 alse) ial sulk 15 13 
Kingbird 126 184 310 1.6 Pe Lae |e a2 18 17 
Bobolink 119 631 750 1.5 8.6 | 2.9 | 13 6 7 
Grasshopper spar- 
row 110 0 110 1.4 0.0 ; 0.4 | 14 LS 20 
_ Brown thrasher 104 204 308 a LS Yi leas Uo APA abs) 17 18 
Red-headed wood- | H 
pecker 99 259 358 is 14] 14] 16 14 15 
Barn swallow 96 159 255 1.2 0.9 1.0 | 17 10 19 
_ Cowbird 102 | 1845 1947 1.3 | 10.3 7.6 | 18 3 4 
Quail 91 224 315 #2) 182 127 || 19 16 16 
_ Upland plover 2 0 89 14 0:05) 0:3) |, 20 21 
Crow 287 376 11 1.6 16), | 21! 13 14 
Totals 500 15,292 | 21,888 | 85.3 | 85.0 | 85.1 
| 
| 
_ the other two species two and a half times. By combining the numbers 
_ of each species for both years, we get the most authentic record obtain- 
able from our data, and by this means we see that the eleven principal 
_ species of the summer birds of the whole state, were the English sparrow, 
; crow-blackbird, meadowlark, cowbird, mourning dove, red-winged black- 
bird, bobolink, ‘diskcissel, prairie horned lark, flicker, and robin, abundant 
2 in the order named. These eleven species taken together aggregated 74 
per cent. of all the birds counted in the summer months of the two 
_ Per square mile | 549 | 842 | 725 | | | | | 
* Commonly known in Illinois as the crow-blackbird, or common blackbird. 
