We have two swans that I have been raising since they were two months old. They are currently about four months old. We have a 4 acre pond which we have a pen on for them to be in during the day and they are put away in the barn in the evenings. My question is if I don't clip their wings, will they most likely stay on our property since they've been raised here. Also if we do decide to clip their wings, at what age should it be done. Thanks!