Beginner your origional question:
do the hunting seasons apply to hunting privately released birds on private land? (pheasants) some are exotic pheasants... 
You would be wise to have a receipt stating you purchased ANY game bird from a licensed breeder, exotics are different (what specise exactly are you talking) but not necessarily a given as no issue. Any gamebird you release you had better tag/identify somehow with a noticable indicator that it is infact one of YOUR birds, a leg band and a piece of surveyor tape so you know when it gets uo there is no question it is yours. We get away a little easier on the wet side as there not much of a native population to worry about. Ensure it stays a small "training session" with just you or a small group, if you get into the reserve thing there is certainly more laws and permits. I have had a gamefarm license for 10 years and sold thousands of birds but have only been contacted by the game dept twice for folks using my birds and both times were at western WA release site. PM me if you have any other questions, I am NOT a lawyer or a game warden but I will give you the best info I can.