I went out this morning to missing ducks. I found one muscovy hen partially eaten. The head and upper portion of the chest are missing. I did not see any wounds on the body. Another muscovy hen and my runner drake are gone. I didn't find any sign of their bodies. I have a runner hen still alive with a couple of wounds to the chest. I haven't caught her yet to get a decent look. This occurred in Northwest Missouri. I'd appreciate any ideas on what predator may have gotten them. The ducks live inside the fenced yard with my two dogs.