I would like to read a couple decent studies on the issue - but have not found one. I read fairly often that there is conjecture that deer feeders artificially increase coon populations. That is a plausible thought, especially in areas where ag crops are not already available. The same could be said for crows and hogs. When I first started feeding corn, we had masses of coons come to our feed locations. Sometimes 15 or 18 in a single picture - so we definitely had a decent population prior to feeding. We have very few coons now - but that is probably largely a result of the feed locations concentrating coons (and hogs) and making it easier to shoot or trap them. I have feeders now that have not had a coon or hog in a picture in a month or more. The coons may have learned to avoid them - as have the hogs. I will have hog rooting in a food plot multiple nights in a row, 200 ft from a feeder - and never get a hog picture at that feeder. I know my coons become dog proof trap shy very quickly now. Most of the deer feeders in my area run about two months out of the year - Nov and Dec. It is widely recognized that a bumper acorn crop will result in elevated turkey nesting success or fawn recruitment - although I have not read specific research to that, either. I dont know how nutritious corn would be to a coon - it is not perceived to add much of value to deer - especially here in the south where they dont experience much in the way of a winter stress period. Would be interesting to see.