I have two DNA tested male mute swans that act like a pair. My neighbor lost her male swan this winter. I was going to take my nice male over to replace her lost one. When I caught the male the other male became very aggressive and I wisely decided this was not a task I could do on my own. Should I bring her over and let her choose or would this create more havoc? I have two ponds. Need an answer before I mess with Mother Nature. Thanks.