I actually lost 5 ducks Wednesday night. I thought it was coyotes, thats usually what it is until we saw a fisher last night about a mile from our place. Now I am a little worried, fishers are fairly big and not necessarily nocturnal. I have not lost another bird since but now I have noticed a couple of rabbits that are not around. I was missing a few cats also. May have to set a big trap up in a tree.
Better make sure to lock everyone up at night and maybe keep them penned securely till you trap what ever it is. Why in a tree?