Aythya fuligula – HWYADEN GOPOG – Winter visitor and passage migrant.
The BTO winter atlas showed that Tufted Ducks were present in 10km squares with suitable fresh waters during the winters of 1981-82, 1982-82 and 1983-84.
The darker the colour, the higher the relative total count for each 10km square. The darkest blue represents 26-94 birds seen in a day.
Llys y fran, Pembroke, Bosherston and Bicton were the principal localities involved.
Graham Rees (County bird recorder 1981 to 2007)
Data collected by volunteers for the BTO. Lack, P. 1986 Atlas of wintering birds in Britain and Ireland. T & A.D. Poyser.