Had a walk around a very quiet Covenham Reservoir this evening. No terns, very few hirundines & wagtails. The best on offer was Scaup, 2 Common Sandpiper, 2 Barn Owl, 4 Yellow Wagtail. Then halfway round the res I received a call close to 7.45pm of 2 Dotterel at Tetney Marshes, so then it was a brisk walk & then rally stage to Tetney before last light. Fortunately on arrival there was enough light to enjoy these star waders before retiring to the pub to complete the evening.