County Wildife Site Criteria for Cornwall Appendices

Table of Thresholds for wintering waterbrids in CornwallA B C DLittle Egret 4 2 1Grey Heron 80 40 16 8Mute Swan 52 26 10 5Wigeon 560 280 112 56Teal 280 140 56 28Mallard 600 300 120 60Pintail 8 4 2 1Shoveler 20 10 4 2Moorhen 360 180 72 36Coot 80 40 16 8Oystercatcher 300 150 60 30Golden Plover 500 250 100 50Lapwing 400 4000 20000 4000Snipe 4000 2000 800 400Black-tailed30 15 6 3GodwitCurlew 300 150 60 30Redshank 200 100 40 20Green Sandpiper 4 2 1Common2 1SandpiperBlack-headed Gull 3800 1900 760 380Herring Gull 900 450 180 90Table to enable assessment of combinations of species on any one siteNo of species Minimum Qualifying ThresholdOneATwo B+D 2CThree C+2DFour4DFive or more Refer to expert judgement if any of the aboveare not metThe table should be used only as a guide. The final assessment on how the winteringwaterbirds inform us of the importance any site inevitably comes down to expert judgement.Appendix 6 – Species Evaluation in CornwallCounty Wildlife Sites Criteria