Here is a nutritional trick I used to improve my Swans health. Buy liquid kelp from the health food store and put a double dose (according to directions) on a piece of corn bread and feed it to them each day during the winter months. About February increase their protein intake to 28% during the...
Most poultry/waterfowl are near 90% of maturity size at those ages. Be sure the band is loose but not so loose that it slips off or becomes caught on something and injuries their leg.