A mammoth roost at Caldecotte this evening, with c7000 BHG's,1600CG's, and at least 800 Herring Gulls, easily the most of thislatter species I've ever seen in an MK roost. There was 1ad CASPIAN GULL in there too, but still no white-wingers. Also 14 Goosander (8m 6f), 54 Gadwall, and c65 Greenfinch roosting bythe sailing club.
At Calvert mid-morning, 1 BITTERN showed briefly, flying from onereedbed to another before stalking out of sight. Also 2 YELLOW-LEGGED GULL (1 2nd-w & 1 3rd-w) and 1pr Goldeneye on the sailing lake.R (Rob Hill)
Later, towards dusk, an adult CASPIAN GULL roosted, 2 BITTERNS showed, as well as CETTI'S WARBLER and WATER RAIL (Ken Earnshaw)