This map shows the winter relative abundance of the species in Wiltshire, based on variation from the average, as revealed by the shared fieldwork for Bird Atlas 2007-2011 (BTO 2013) and for Wiltshire Tetrad Atlas 2007-2012.
Relative to average
Nos tetrads
>50% fewer
9
1%
25-50% fewer
5
1%
Average +/- 25%
1
<1%
25-100% more
4
<1%
>100% more
3
<1%
Total
22
2%