I spent an hour or so at Woodwalton in The Great Fen with the following sightings:
Dabchick, pair,
Marsh Harrier, pair,
Red Kite, 1,
Crane, pair,
Reed Warbler, 2,
Willow Warbler, c6,
Grass Snake, 2,
Brimstone, c12.
Regards,
David Nuttall.