Lesser Black-backed Gull - 1980s winter atlas

Sunday, October 9, 2011 at 5:48PM
Pembrokeshire Avifauna committee in 1980s BTO winter atlas, GHR, Lesser Black-backed Gull

The BTO winter atlas showed that Lesser Black-backed Gulls 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 46 birds. Over 2,000 were recorded roosting at Llys y fran reservoir during this period.

Graham Rees 

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