I got my 2 gosslings from a neighbor. Now about 12 weeks old and ready to go into their new inclosure.She keeps her flock of about 40 geese and ducks in a large pen with 4 foot high fencing. Says has had no problems with predators. We have all the usual predators around the area: coyotes, fox, racoons, hawks, owls and an occasional mountain lion.(I've never seen one but people say they are here). My fencing is 5 feet on the outer perimeter, facing the outsid of the property and 4 feet on the inner perimeter facing into the property. They will have a house for shelter but will not be locked in at night. Are the Night Guards enough to protect the geese?