Dam End:- 1 Osprey seen at 13:30 for several minutes at mid-reservoir repeatedly harassed by 2 Great Black-backed Gulls and 2 Herring Gulls. It swooped for fish but being harassed didn’t catch any. A Hobby was feeding on mayflies rising early afternoon. A Cuckoo was heard. Mandarin with 4 young, Mallard with young. Egyptian Goose pair had 8 young goslings. Up to 3 juvenile Pied Wagtails along the water edge, a Garden Warbler was singing. Also a Small Tortoiseshell butterfly.