NB: came at night, discovered no access to fort knox then left. this happened three nights in a row. left poop too. has not returned for several days. knows he can't get in. at night, nothing can get in their huge cage, except maybe a black bear..... but since their area outside is huge and obviously unroofed a mink etc, could easily go over perimeter fences and get them............ So, Should i wait till we have a duck killed? or should i risk it on a merely potential predator and spend the money now--just in case? minks, weasels, etc. are mostly nocturnal--mostly --so this is what makes me hesitate in getting a livetrap. the ducks are truly safe at night. any thoughts? thanks!!