September, 1945 



Brown & Yeager: Squirrels in Illinois 



491 



Fig. 15. — Mature elm-maple river-bottom type, Piatt County. Pin oak through the northern 

 two-thirds of IllinoiSj and pecan and other hickories in the southern half of the state, add to the 

 quality of many river-bottom squirrel habitats by helping to insure a year around food supply. 

 The pure elm-maple type is rich in squirrel foods during the spring, but low in this respect 

 during other seasons of the year. 



