I think the state of Illinois releases about 80,000 pheasants annually as part of their "Controlled Pheasant Hunt" program. Hunters pay $30-$35 per day for the ability to take two birds of either sex, on certain state land.

To the best of my knowledge Missouri doesn't release any quail or pheasants.

Interestingly, Missouri regularly stocks "farm-raised trout,"
while Illinois does not. So, we trout fish in Missouri, and pheasant hunt in Illinois...

JERRY