Carduelis spinus – PILA GWYRDD – Breeding resident, winter visitor and passage migrant
The BTO winter atlas showed that Siskins were present in six 10km squares during the winters of 1981-82, 1982-82 and 1983-84.
The darkest blue colour in a 10km square represents 19-50 birds seen in a day, in Pembrokeshire up to 32 birds.
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.