Tree Sparrow - 1980s winter
One record of two birds was registered for the BTO winter atlas of 1981-82, 1982-82 and 1983-84.
Graham Rees
One record of two birds was registered for the BTO winter atlas of 1981-82, 1982-82 and 1983-84.
Graham Rees
The BTO winter atlas showed that Treecreepers were present in the majority of 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 6 birds seen in a day.
Winter distribution was similar to that of the breeding season.
Graham Rees
The BTO winter atlas showed that Teals were present in the majority of 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 150 birds seen in a day.
The map demonstrates the variation between numbers of National Importance at the Cleddau Estuary and the occurrence of two or three birds on small ponds.
Graham Rees
The BTO winter atlas showed that Tawny Owls were present in the majority of 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 2 birds seen in a day.
The lack of registration in some squares reflects observer distribution.
Graham Rees
The BTO winter atlas showed that Stonechats were present in all coastal 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 5 birds seen in a day.
Winter distribution was a little less widespread than in the breeding season indicating a withdrawal from most inland squares.
Graham Rees
The BTO winter atlas showed that Stock Doves 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 60 birds seen in a day.
Winter distribution was a little less widespread than in the breeding season but did involve some flocking.
Graham Rees
The BTO winter atlas showed that Starlings 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 2,061 birds seen in a day.
The largest numbers were recorded around damp pastures and at roosts.
Graham Rees
The BTO winter atlas plot refers to regular wintering birds, their number varying between 2 and 14 across the 1981-82, 1982-82 and 1983-84 period.
Graham Rees
The BTO winter atlas showed that Sparrowhawks 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 3 birds seen in a day.
It is likely the highest counts plotted reflected the maximum intensity of observer activity.
Graham Rees
The BTO winter atlas showed that Song Thrushes 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 26 birds seen in a day.
There was a marked increase in Pembrokeshire during the cold weather of 1981-82.
Graham Rees
Up to five birds were seen in four 10km squares during the BTO winter atlas of 1981-82, 1982-82 and 1983-84.
Graham Rees
The BTO winter atlas showed that Skylarks 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 140 birds seen in a day.
The largest flocks were found where there was a good supply of seeds.
Graham Rees