Pits around Abingdon Sewage Works c3-5pm

Redhead Smew; Green Sandpiper; 2 Raven; Bittern (reported c1.00pm but not seen towards Dusk/at Dusk); Water rails both seen and heard and with Little Grebes back on a number of pits after recent absences, as most pits are now clear of ice excepting a few very sheltered patches. Barn Owl over fields to SE, near Dusk.