|
Résumé :
|
Counts of wintering Slavonian Grebes Podiceps auritus around the coasts of Britain and Ireland were collated from county bird reports for the period 1986/87-1992/93. Mean peak values were calculated for the midwinter period for each site, and these were summed in turn to give county and country population estimates. The population wintering in coastal waters was estimated to be 648 individuals in Britain and 55 in Ireland. Making allowance for small numbers wintering on inland waters, the total wintering population was estimated to be 725-730 for Britain and Ireland, 50% higher than the estimate in the Winter Atlas (Chandler 1986). More than half of the wintering population was found at the top ten sites. Legal protection, at least in the UK, of the most important wintering sites is inadequate under the existing legislative framework.
|