One feather
When Daniel Boone and company first came to the spot where Boonesboro was built, in 1775 they looked across a meadow and saw a herd of 30 to 40 buffalo which promptly ran off. Buffalo are more grazing animals than browsers like elk and deer and can't survive in deep virgin forest.
Also in Kentucky at the location of Eskitapthiki an abandoned Shawnee village. Simon Kenton said it was a large field and that indians had planted their corn in very large hills that they had made, and the hills were still visible.
Kentucky and Southern Ohio had large Cane Breaks. While cane grows to a height of 15 feet it requires a lot of sun light and does not grow in deep forest. There was a very large cane break in Kentucky which started near Maysville and ran inland for many miles. Around the many salt licks such as at "Blue Licks", and "Big Bone Lick" there were large open areas where buffalo, elk, and deer came to graze and lick the salty earth.
In Ohio at the location of the Shawnee villages of Cornstalk's town and the Grenadier Squaw's town were both located on the "Pickaway Plains." The plains started in the area of present day Circleville and were in a large oval shape being 2 miles wide East to West and 5 miles long North to South, with a few trees and tall grasses. East of Columbus was located what was called the "Great Buffalo Swamp" in the 18th century it was surrounded for miles by plains. The swamp was dredged out in the 1930s and became Buckeye Lake.
In 1976 the Ohio Geological Survey published a map of Ohio of the original forest, bogs, fens, meadows, swamps,ect. as it appeared in 1776. There were vast areas of meadows and openings scattered over the whole state. It is a mistake to think that everything East of the Mississippi was one vast forest with no breaks.
For good description on Kentucky's original vegetation state please see Ted Beleu's (sp) "The Long Hunt, Death of the Buffalo East of the Mississippi River."
Hope this helps you.
Regards, Dave