I did a cetacean survey from Locks Common this morning in flat calm conditions. 2 porpoise present for 3/4 hour. 2 great crested grebe, 2 RT divers u/c, 3 diver sp d/c, 13 common scoter d/c, 10 guillemot d/c, 30+ auk sp on surface of water about 1.5 miles out. An egret went d/c which I suspect to be GWE but too far out to be confident. 4 chough were feeding on the common.