Lots of gulls already on the water at 2.30. 4 Yellow-legged (2 adults and 2 2CY) and the Ring-billed gull already sleeping. 2 Juv Kumliens with about 50 LBB above the Hide until 4.30 when they flew down to the main roost. Also 3 Goosanders (m, 2f) flying down the reservoir and up the western arm at dusk.