Sunday, October 9, 2011 at 6:47PM 
The BTO winter atlas showed that Pied 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 19 birds seen in a day, as at roosts.
Graham Rees
Sunday, October 9, 2011 at 6:46PM 
The BTO winter atlas showed that Pheasants 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 9-33 birds seen in a day. Releases of birds reared for shooting varies year by year, so the map represents a snapshot limited to the winters in which the survey was conducted.
Graham Rees
Sunday, October 9, 2011 at 6:45PM 
The BTO winter atlas showed that Peregrines 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 and refers to birds in estuarine habitat.
Graham Rees
Sunday, October 9, 2011 at 6:43PM 
The BTO winter atlas showed that Oystercatchers were present in all coastal and estuarine 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 45-225 birds.
Graham Rees
Sunday, October 9, 2011 at 6:42PM 
The BTO winter atlas showed that single Mediterranean Gulls were noted in five Pembrokeshire 10km squares during the winters of 1981-82, 1982-82 and 1983-84.
Graham Rees
Sunday, October 9, 2011 at 6:41PM 
The BTO winter atlas showed that Mute Swans were present in suitable 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 24 birds seen in a day.
The distribution plot highlights the square that includes Pembroke Mill Ponds where the largest concentration in the county occurred.
Graham Rees
Sunday, October 9, 2011 at 6:36PM 
The BTO winter atlas showed that Marsh Tits 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 8 birds.
However, it should be noted that the figures show a high correlation with the number of recording cards returned (therefore related to recording effort) for each 10km square.
Graham Rees
Sunday, October 9, 2011 at 6:34PM 
The BTO winter atlas showed that Long-tailed Tits 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 16-28 birds.
Graham Rees
Sunday, October 9, 2011 at 6:11PM 
The BTO winter atlas showed that Goldfinches 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.
However, it should be noted that the figures show a high correlation with the number of recording cards returned (therefore related to recording effort) for each 10km square.
Graham Rees
Sunday, October 9, 2011 at 6:07PM 
The BTO winter atlas showed that Goldcrests 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 20 birds.
However, it should be noted that the figures show a high correlation with the number of recording cards returned (therefore related to recording effort) for each 10km square.
Graham Rees
Sunday, October 9, 2011 at 5:52PM 
The BTO winter atlas showed that Little Auks were noted in three Pembrokeshire 10km squares during the winters of 1981-82, 1982-82 and 1983-84. These were single birds noted inshore following onshore gales.
Graham Rees
