Grey Wagtail - 1980s winter atlas

Sunday, September 18, 2011 at 4:17PM
Pembrokeshire Avifauna committee in 1980s BTO winter atlas, GHR, Grey Wagtail, passerine

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

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