So our two Pekin ducklings are over a month old now and we are currently building them a nice secure pen out back behind our house near the pond. We had planned on letting them free-range the field and pond during the day and then lock them up at night. I have seen large den holes next to the pond and I'm thinking it is probably a muskrat or mink living there. I want to let the ducks enjoy the pond, but I'm really scared of something killing them. How safe would two Pekin's be out there during daylight hours? I don't want to let them loose just to be walking targets to predators. The pond is about 300 feet from our house. I don't know what to do with them so that they are happy and safe.