If someone was to send me waterfowl, how does it need to be sent. Can you send it USPS or does it have to be UPS or FEDX. I know you want to pack it tightly while still very frozen and well insulated no more than 2nd day but better if it is next day. Can anyone else comment on any advice that would ensure the birds to arrive in the best shape possible. I have also heard that you have to tag them before sending, hunters name who harvested, date, species, am I leaving anything out?