Aythya ferina – HWYADEN BENGOCH – Winter visitor and passage migrant, has bred
The BTO winter atlas showed that Pochards were noted in 10km squares containing suitable fresh water sites 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 over 95 birds seen in a day.
Up to 462 were recorded at Bosherston, the principal locality for this species.
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.