Water Rail - 1980s winter

The BTO winter atlas showed that Water rails 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 3 birds seen in a day.

To a large degree the plotted distribution follows the degree of observer effort.

Graham Rees