Telegraph: There has been a big drop in the numbers of ducks, geese, swans and wading birds visiting some of Britain’s internationally important wetlands, the latest survey has revealed. While the numbers have increased for some species, most have suffered a dramatic decline, according to the Wildfowl and Wetlands Trust report. Its UK 2006/2007 waterbirds survey reveals that 143 sites acros the country are of international importance for 43 species of waterbird either during the winter or …