I have an American Buff gander that is 18 months old that seems to be as healthy as the other 5 in the flock. Last year when he was about 6 months old he lost the feathers on on his bottom side. that is the lower part of his breast and between his legs. As time went by he grew alll his feathers back. Now this year he is doing the same thing. This is not moulting as all 6 geese did this earlier in the year. He is theonly one and is loosing only his bottom feathers. These geese run free range on a 3 acre pond with about 20 ducks. I feel bad for this gander as sometimes he stands on the bank of the pond while the others swim around. He spends all his time primping himself. Is there something I need to do for him? I know something is wrong.