Bucephala clangula – HWYADEN FRONGOCH – Regular visitor. Not recorded in August and September
The BTO winter atlas showed that Goldeneyes were present in both estuarine and fresh water 10km squares 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 27 birds, with up to 47 recorded in SM 91.
Data collected by volunteers for the BTO. Lack, P. 1986 Atlas of wintering birds in Britain and Ireland. T & A.D. Poyser.