The BTO winter atlas showed that Stock Doves were present in most 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 60 birds seen in a day.
Winter distribution was a little less widespread than in the breeding season but did involve some flocking.
Graham Rees