Yesterday, I spotted a Sandwich Tern, Thalasseus sandvicensis patrolling the open river lock at Brownshill Staunch on the Great River Ouse. It flew back and forth over a stretch of about 100 metres for 20 minutes or so before heading off downstream.
The river cuts through the RSPB Ouse Fen nature reserve (I’d walked in from the Over end rather than Needingworth). I’ve seen several Common Terns and even a Black Tern on this reserve. But, a Sandwich seemed unusual so I posted my spot to the...