The babies have survived some hair raising moments that I can only guess at. I did see them get swept over the dam twice and later, somehow come bobbing up and later join their relieved parents. I've seen their number dwindle only a little. Originally there were seven cygnets and I think six have fledged. Currently, four hang out together and I see them every few days.
I know mute swans are a problematic and aggressive species but I felt lucky to follow their progress this year.