Radley UV therapy with added Bittern

Pit H/I flooded enough to displace any small mammals. Walking the higher perimeter bund / fenceline, as more water poured into surrounding ground / orchard Lake from Thames. 14:03 - Bittern (click for map) disturbed from fenceline, facing Orchard lake (to west). It flew off East to land in central south of Pit. Seen well flying directly away, with strong sunlight behind me. Interestingly?... No dark crown noticed, (moustachial details hidden anyway); VERY noticeable two tone upperwing; with dark flight feathers and paler secondary coverts. Redpolls, Goldfinches, Reedbuntings, Green peckers. Red kites, singing Wrens and single Snipe, plus 15 Pochard on Orchard Lake and noisy swimming Water Rail here, being the best of a poor avian showing.