A friend loaned me a copy of that book--I think it's the same one--years ago. One thing I remember from it was the very accurate observation Bogardus made regarding the massive changes in habitat that were taking place back then, as the prairie was being converted to farm land. He remarked that in Illinois, the result was an increasing population of quail and a decreasing population of prairie chickens.

Too bad they've now mostly lost the quail as well.