Dove: fillet the breast, dip in flour, egg, flour with seasoning and fry in bacon grease. Serve with mashed potatoes. Gravy can be made to go with this by making a roux in the pan and adding milk.
Deer: So many ways! Steaks, roasts, stew, ribs in the crock pot with barbecue sauce and a little bourbon, soup, etc.
Squirrel: Roasted over a fire with some salt. Or treat like dove above.
Groundhog: boil and remove meat from bones when tender. Add curry to the meat and let it simmer 15-20 minutes. Serve over rice.