I came here looking for an answer as to why two of my ducks and one goose has been losing their balance. The two ducks died but the goose just started. Had another duck that developed it but recovered on her own. I have had chickens for about 12 yrs and just got 40 geese and 7 ducks last June when a friend gave them to me when she moved. They are in a separate pasture from the chickens.