In Tasmania, Australia (where I am), we get Quolls, eastern ones, or to be exact Dasyurus viverrinus! They are protected and so when faced with a Quoll attack. What do you do?! I lost 3 hens in one night to a Quoll. I asked around and found out the only way to counter them is to make your coup IMPENETRABLE! I had to reinforce all the wire around the shed, so the Quoll couldn't nudge his way under it. I had to strengthen and put springs on the coup's hen-doors as well. It was a lot of work, but I haven't lost any more featherfriends (fingers crossed, touch wood!).