I was extremely privileged today to find a swallow's nest with four youngsters under a low bridge up in the hills above Cwm Berwyn. Not a place where I would have expected swallows to nest. Both parents were busily feeding, so good luck that they will fledge soon and be on their way before it gets too cold! Because of forestry felling, I also noticed that Llyn Berwyn is now visible from the mountain road and there is an access track right down to the lake. Not sure if anything interesting was ever seen there but it might be worth keeping an eye on it, especially as a large part of the lake can now be scanned from the road with a scope.