Grey Wagtail - 1980s winter atlas

The BTO winter atlas showed that Grey Wagtails 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 4 birds.

The map plot shows a slightly wider winter distribution than that of the breeding season.

Graham Rees