I have visited Llyn Mynydd Gorddu again and seen the following -
A juvenile moorhen,
A little grebe feeding a small chick (so this would be a different pair to the one seen earlier in the year) plus a different adult.
2 female/juvenile tufted ducks. Either the female has gone walkabout or one of the remaining ducklings has died, leaving just the one.
A kestrel was overhead and a stockdove flew over (the first I have seen in the area for a long time.)
There were about 40 swallows over and around the pond.
Perhaps most interesting though was the excellent variety of dragon/damsel flies present.
On this visit were emerald and blue-tailed damsels, common darters, black darters, a "pair" of common hawkers, and emperor dragonflies. That must add up to at least ten species altogether.