North Bucks GREAT NORTHERN DIVER still present

Juvenile GREAT NORTHERN DIVER still present between 08.30 and 09.00. In the basin on the eastern edge of the north lake of Caldecott (access from Redcote Manor, Walton Park). It did a lap of the fringe of the basin before settling in the southern section. Surfaces for about 5 seconds, then disappears and reappears some distance away (Peter Barnes)