. Fig. number ol eagles i census are,IS uilliiii llie Lower Illinois Ri' • 100-299 % innied per in\enior\ a er Region. 1972-1986. Fig. sh, into Senacliw'ine The estimated density of bald eagles in the Lower Illinois River Region averaged ().5(i per river mile or per squaie mile of wetland habitat. The average density per scjuare mile of wetlands () in this re- gion was slighth higher than the value lor the ('entral and L'pj)ei Illinois River regions () and was also highei tlian the values for all of the Mississippi River


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