At around 10 o'clock this morning, Mike Mayall came upon a flock of SANDWICH TERNS at Spade Oak Pit, Little Marlow - all roosting at the end of the spit with Common Terns and Black-headed Gulls. On a brief scan, Mike could count 11 but when I arrived 17 minutes later after a quick text from Alan Stephens, Jim Rose and he had actually counted 13 - the largest single flock to have ever been recorded in Buckinghamshire. Exceptionally, they remained throughout the day, even when Alan returned this evening to check. At least six individuals were ringed, including one adult with red over blue, indicating a bird trapped in 2010 at Sands of Forvie NNR, the Ythan Estuary colony. What with an adult Gannet yesterday (present for 20 minutes around lunchtime at Dorney Rowing Lakes - Dave Cleal/Jim Rose), what will tomorrow bring......