We're hiring someone to build me a goose & muscovy pen. They are going to be housed separately and the space is about 75 x 75 (feet) for each pen. I was thinking welded wire fence--cheaper than chainlink...but not sure if a coyote would easily dig underneath? We have a LGD but the waterfowl pen will be on the other side of our property, away from the chickens...so Cash will be stretched out protecting them...one side will house my sebbies & blue/fawn muscovies, the other side will house the chocolate pieds....Hubby suggested electric, too...but the mesh is so stinkin' expensive and it's supposed to be temp. There is an existing smooth wire (three strand) fence there...