Nairn Swans - New Generation ?

The young Swans that have been scouting around the lower River over the past few weeks appear to have moved in. 

Unchallenged by Penny and Duke who have now been gone for ever 3 weeks, the new generation are growing more confident by the day.  

Penny and Duke could still return, and the young ones are unlikely to match their power. However it may be that Penny and Duke have retired from cygnet rearing and have joined a flock.

Penny is 18 years old now, and perhaps close to the end of her egg laying fertility. It is still early enough in the season for them to return and nest again, but the young ones are likely to have a go themselves soon.
I got the impression that the young Pen, was one of Penny's offspring as she was in the lead throughout my observations, she seemed to know the river, even in low water conditions and was the prime mover searching out river weed.

The Cob has a long slim neck, and a suitable name of "Slim" might be appropriate. In recognition of her great work  saving dozens of Swans over the years, I think calling the Pen "Sue "after our avian adviser would be nice.
They are probably around 3 years old and about to nest for the first time - it remains to be seen if they are the new generation of Nairn Swans !