OF ILLINOIS BIRDS 



Breeding Symbols: 



The sectional mark [] stands for N. 111., mainly 

 understood to be the Chicago Area, and unless 

 otherwise stated, is given on the authority of 

 Edward R. Ford. 



A single dagger [f] is intended for the Philo, or 

 Champaign County, district of C. 111., and used on 

 the authority of Isaac E. Hess. 



A double dagger [J] denotes, or indicates the 

 Marion County district of S. 111. authority C. B. 

 Vandercook. 



The dash [ ] is for the Richland district of S. 

 111., the home county and used on authority of 

 Robert Ridgway. 



The asterisk [*] is for extreme S. 111., and unless 

 otherwise stated, on the authority of Robert Ridg- 

 way. 



A combination like this [ft *] would mean the 

 species has been found nesting or breeding prac- 

 tically over the entire state. 



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