Where I live ( in Canada) our deer season just closed! Might I add, I was skunked this year, no deer for me! Around here bow season opens 2-3 weeks before rifle season. We don't have any special season for just youth! The youth hunt during the regular rifle season, with an adult of course! Deer can travel MANY miles with a wound. I have even seen ones that have been nicked in the heart take off in the woods and have to be tracked down. My uncle and I went out hunting when the season started, he wounded the deer and we had to track it through the woods, by just a little blood trail. It took us a VERY long time to find the deer, we walked probably 5-7 miles altogether ( back and forth through the forest, following the blood), and the deer was still alive when we caught up with it and had to be shot again. It is entirely possible this person shot the deer on his own property. Here we are not allowed to shoot on our own property unless it is 400 meters away from any dwelling, so here he could have been caught for that too!
It certainly a shame for that meat to go to waste though! There is nothing worse then seeing that happen!