

Appendix (e) 
Digest of "Numbers & Local Distribution of Ill. Land Birds" 
By Stephen A. Forbes & Alfred 0. Gross 
(Bulletin of Natural History Survey Vol. XIV, Art. X, October 1923) 
(Field Work 1906-9) 
Acreage Covered & Numbers All Birds per Sq. Mi. 
Winter Spring Summer Fall 
Acr,. No. Acr. No. Acr, No, Acr. NO. 
Southern 1400 836 
Central 2600 440 4500 4100 
Northern 23500 420 1756 1458 

State 6400 520 
Populations Per Sq. Mile by Species 
Quail Crow Prairie Chicken 
Southern (81 winter 1906-7) 980 fall 1906 19 fall 1906 
(365 fall 1906 
Central. 72 (128 (winter 1906-7) 12 fall 1906 
Northern sabe) 57 (winter 1906-7) 
Winter Populations Per Sq. Mi. by Types & Species 
Quail Crow Prairie Chicken 
Bt igor kn bah Don ie hme ski haehas ebaatenan ibe kana ted dines LOSS < = 8-5 eR ener es 7 
Wheat--------- -c--- sv os bn ws o> een a be Ss on eo a os a Sn we ” 
Stubble------ AQ wonnn ne nen emer 69 
Plowed | a few 
Pastuge ---- 9 -w--e8n-- -sre conn 27 
Meadows ies 19 me ee ee een 23 
Woods manene AY conn nen nner nnn nnn 74, 


Shrubbery - 377 
