y] 





- '^ NATURAL HISTORY SURVEY OF ILLINOIS, 



State Laboratory of Natural History, 



S. A. FORBES, Director. 



THE 



ORNITHOLOGY 



OF ILLINOIS. 



PART I, DESCRIPTIVE CATALOGUE, 



By ROBERT RIDGWAY. 



PART II, ECONOMIC ORNITHOLOGY, 



By S. a. FORBES. 



VOLUME I 



Published by Authority of the State Legislature. 



SPRINGFIELD, ILL.: 

 H. W. BoKKEB, Pkintek and Binder. 



1889. 



