Grey Heron - 1980s winter atlas

The BTO winter atlas showed that Grey Herons were present in most 10km squares of their known breeding range during the winters of 1981-82, 1982-82 and 1983-84, being equally at home by fresh and salt waters.

The darker the colour, the higher the relative total count for each 10km square.  The darkest blue represents over 7 birds.

Graham Rees 

Goldcrest - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Great Black-backed Gull - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Green Woodpecker - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Feral Pigeon - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Fulmar - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Dipper - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Dunnock - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Curlew - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Coal Tit - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Coot - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible

Cuckoo - 1970s breeding

Red = breeding confirmed

Orange = breeding probable

Yellow = breeding possible