Blackbird - 1980s winter

GHR

The BTO winter atlas showed that Blackbirds were present in all 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 115 birds recorded per day.

Ring recoveries confirm that the large winter presence includes Continental birds.