A friend told me that one of her two domestic geese killed two ducks within 3-4 days. She thinks because the female goose is laying eggs (which the friend collects) she attacked at night the ducks in the same enclosure and killed one and 2-3 days later another one. She said one of the ducks looked like something laid on her (no harm but dead) and the other one was stocked between the wall and a cage. Daytime the geese and ducks get alone on the grass but in the enclosure I saw once the goose kind of chased the ducks. I do not know what's the truth but I rather suspect a predator is doing this. She has a big barn and two horses on one side under the barn roof but open on back side (just fenced the horse area) and next to it is the goose and duck enclosure also under the barn roof but open on the top because her chickens have a nesting place in the enclosure but sleep high on the poles all over the place. The ducks and geese go at night in the enclosure. The barn or stall is locked up at night but the horse side is open and the horse side wall or fence is made of steal posts 3-4 inches apart. I know from my experience that a raccoon can easily fit thru this space between still posts. Plus, they can climb. My friend said the raccoons have never get her chickens in the past but they are high on poles at night. So, what do you think who killed the two domestic ducks?