1630-1715. 10 deg and a NE wind. Scanned the E flood from the mobile hide. 3 Great Black-backed Gulls, per photos– 2nd calendar year birds, at different stages of development– were slightly surprising visitors. Unlike the Black-headed Gulls and several duck, they were not concerned by the large overflying raptor. 14 drake and 2 duck Gadwall were present, with several Teal, a pair of Pochard, a pair of Shoveler; the Wigeon long stayers,and several mobile Shelducks. 2 Greenshank zig-zagged around the flood, calling continuously before dropping into the SE corner.A dozen Swallows and 2 House Martins were hawking over the flood. A cold and somewhat inhospitable evening!!