Using sugar causes a shift in osmotic pressure, which can decrease edema(swelling). Honey can be used on wound dressings but only under very specific circumstances. I would probably irrigate the wound with warm water twice a day and skip the honey. If there are any maggots left in there I would not want to put honey on the wound. As always, a vet that is familiar with poultry is always going to be your best bet. Wishing you and your chicken well. They are amazingly tough.