Anas penelope – CHWIWELL – Winter visitor and passage migrant
The BTO winter atlas showed that Wigeon were present in the majority of 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 300 birds seen in a day.
Over 2,000 within the Cleddau Estuary system constituted the main concentration.
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.