Bewick Swan - 1980s winter

Friday, September 16, 2011 at 11:33AM
Pembrokeshire Avifauna committee in 1980s BTO winter atlas, Bewick's Swan, GHR

 

The BTO winter atlas showed that Bewick’s Swans were present in seven10km 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 9-29 birds, the maximum in Pembrokeshire during the period being ten in 1981 during a cold weather influx.

GHR 

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