fairly typical summer's day.   Moving north were 66 Swifts, 29 Swallows, 4 House Martins and 2 Sand Martins.   Other birds seen included 2 Cuckoos, Turtle Dove, 2 Kestrels, Hobby, Marsh Harrier, 2 Mistle Thrushes, Pied Wagtail, 3 Yellow Wagtails (all juveniles), 4 Corn Buntings, 4 Cormorants, 4 Tufted Ducks and 6 Little Egrets