Hello I had 11 ducks, four were Khaki Campbells mixed with Mallard, the rest straight Khakis. The pond they are on is just about an acre big. It froze, however, not completely as the ducks stayed in a circle in the water and we have a pump running so part of the pond stays thawed. Never in 6 years have we had a duck go missing in the winter when the pond starts to freeze. The other night 6 went missing. I found one laying dead on top of the ice with blood all over its head and neck with puncture wounds. Another one was underwater below the ice. The other four were never found with no trace of a struggle. There were no predator tracks in the ice and no ruminants of the ducks not even feathers in the nearby woods. What could have done this? Any ideas on what predator took our ducks in one night without a trace? I’m just so baffled what happened. They had a circle of thawed water to stay in and the edges of the pond were somewhat thawed. Any possible ideas would be helpful just to understand what happened. We are heart broken…