This morning I found a BLACK REDSTART near Willows Farm. It was by the road to Tyttenhanger House, at the far end of the field next to Willows Farm car park. I watched it for a few minutes at close range, but then phoned the news to RBA: when I'd finished, the bird was nowhere to be seen.
AlsoLittle Egret on Colney Heath
Common Shelduck and Ruddy Shelduck on main pit
Drake Goldeneye on main pit
Tawny Owl calling in Garden Wood
81 Fieldfare and 44 Redwing in Colney Heath horse paddocks