New cygnets at Franklin...?!

I'm not sure this is the right time of year for new cygnets, but this family seemed quite cheerful today. I have a suspicion that these adults are the same ones that raised the six cygnets I've been following for a few months. I'll see if I can match the markings on their beaks - these seem to have some individuality that might mark individual swans. Anyway, I was surprised to see new cygnets so close to winter - the last lot appeared just as summer started.