A national census of Mute Swans Cygnus olor will take place in spring 2001, repeating the last one, conducted in 1990. Mute Swans are widespread during the breeding season on all manner of wetlands, including small lakes and, particularly, rivers, habitats little visited by waterbird surveys. This census will be organised by WWT in conjunction with the Swan Study Group, Scottish Ornithologist's Clu


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