Blue Tit – 2003-07

Cyanistes ceruleus – TITW TOMAS LAS – Breeding resident

Comparison with previous atlas:

1984-882003-07
Breeding confirmed302311
Breeding probable5495
Breeding possible5223
No of tetrads occupied408 (of 478)429 (of 490)
Percentage of tetrads85.4%87.6%

It was estimated that 24,000 pairs were nesting in Pembrokeshire at the end of the 1984-88 survey, based on a mean value of 60 pairs per occupied tetrad. This was a similar level to that of the 1988-91 National Atlas, using the calculated national average and relative abundance distribution.  

Little distributional change was apparent by the conclusion of the 2003-07 survey but the BBS indicated there had been an increase of 29% in Wales between 1994 and 2007. Accepting that a similar increase took place in the county, the population at the end of 2007 was probably about 31,000 pairs. Widespread garden feeding resulting in increased winter survival was undoubtedly a contributing factor to increased breeding numbers.

Graham Rees. Pembrokeshire County Bird Recorder 1981-2007

More about the Blue Tit in Pembrokeshire