1 Common Sandpiper still on central causeway
1 White Wagtail - no. 3 tank
1-2 Green Woodpeckers - east causeway
1 Great Black-backed Gull with Lessers on res. 4
2 small waders flew up with Lapwings from mud at north end of causeway and continued east. Call similar to Dunlin but sounded thinner and less harsh. Wings looked longer, narrower and more angled like Ringed Plover. These were almost certainly Curlew Sandpipers but impossible to be 100% sure on views obtained.