Great work by both of you, best wishes!! Tell him thank you from us sportsmen and welcome to the tax paying crowd! My son was done with college yesterday also. Wish I had a story that ended somewhat close.
Congratulations to you and your son, in that position I can only imagine you can become bogged down dealing with the low lifes of the hunting world but you also can experience some amazing things that most people never have the opportunity to do.
If he's wise, he'll avoid the shoulder season issue like the plague and devote his time and efforts into being a good Game Warden. There are some issues that field personnel can have a direct influence in. I don't believe shoulder seasons is one of those.