I've been losing a bunch of ducks lately - mostly Welsh Harlequins and a few Harlequin/mallard hybrids. All of them were mid-size ducks - not too big or small. Usually they just disappear without a trace, but I did find one completely headless one. She was killed at about 4:00 or 4:30 in the afternoon on a damp, grey day. We have 2 good dogs and it's hard for me to believe that a raccoon or mink would attack during the day with them around. The frequency of attacks, headless duck, and presence of guard dogs makes me think it's an owl. Plus, we've actually seen barred owls around here recently. I've read that owls will eat the heads off prey that's too heavy to fly with. But can they actually carry off a duck so that it just disappears without a trace? I'd sure like to identify the culprit who took my Buttercup.