Emberiza citrinella – MELYN YR EITHIN – Breeding resident
The BTO winter atlas showed that Yellowhammers 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 75 birds seen in a day.
Flocks found at a good seed source provided the largest numbers.
Map data from the BTO Winter Atlas 1980. Text by GHR
Data collected by volunteers for the BTO. Lack, P. 1986 Atlas of wintering birds in Britain and Ireland. T & A.D. Poyser.