they killed all 3 of my ducks. but no evidence was found on how they got in and no hair was found on the fencing. these were my replacement ducks since i recently just lost 3 other ones. they were my babies and they were so excited to see me every day i went to down thereProbably raccoon.... how many were killed? Possum would most likely kill only 1 or 2 at most...eat some there and leave the rest.... Coons will kill many, and usually leave lots of feathers like that. Carry off the carcass most times also after leaving behind a bloody mess.
Hawks will carry off if possible.... foxes will carry off most of the time also. Seldom will make that big a mess... they prefer to grab and run. Coons also eat lots of different foods and berries and seeds like that are common in their scat.