Magpie - 1980s winter atlas

Sunday, October 9, 2011 at 9:23AM
Pembrokeshire Avifauna committee in 1980s BTO winter atlas, GHR, Magpie

 

The BTO winter atlas showed that Magpies 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 44 birds. Communal roosts were included in the plot.

 

Graham Rees

Article originally appeared on Birds in Pembrokeshire (http://pembsbirds.squarespace.com/).