Since Wednesday we've had yellow, grey, pied and even a possible sighting of a white wagtail - all from lin dike with the exception of the pied wagtails which seem to be cropping up all over the place, including our picnic area. Lin dike has boasted a nice selection of waders over the last couple of days, including ruff, ringed plover, dunlin, greenshank, green sandpiper, lapwing and common sandpiper. Also down that…