Scanning South from the dam also produced a surprise flock of wader-like birds heading NW over the distant horizon. However, they only appeared as a moving band of tiny dots in a subtle V-formation so remained unIDable.
distant wader-like flock numbering a good 300+ birds as seen through my scope (any help with ID much appreciated :P )
Moving on to College Res yielded 1 Kingfisher and a Bittern still showing well in the open at the Southern end feeding on a toad/frog. I also connected with my first site record of Mediterranean Gull here too, this time a 1st winter bird.