Went up to Llyn Blaenmelindwr this morning. The 8 swans are still there but when seen in good light ( it was dusk/dark when I saw them yesterday) it now appears to be two adults with a party of juveniles. After a yomp through the swamp at the north end of the lake, I managed to get some photos - not perfect but at least you can see what they are and I've enclosed a photo if you think its good enough. They were still there when I left.
Brian Wiley