Song Thrush - 2003-07
Sunday, May 13, 2012 at 6:02PM The song thrush is widespread across the county, but absent from the hill tops and all of the islands save the partially wooded Caldey, although it nested at Skomer in 2006. Around prime woodland, densities of up to 40 territories per square km have been recorded, in coastal areas as low as two per square km. The county estimate of 6,000 pairs made at the conclusion of the 1984-88 survey was based on an average density of 15 pairs per tetrad, which accorded with the slightly later UK national average used in the 1988-91 National Atlas. Since then the BBS has calculated a 24% increase in Wales between 1994 and 2007. If this increase is applied to the findings of the 2003-07 survey, a population of 7,500 pairs breeding in Pembrokeshire at the end of 2007 is arrived at.
Despite Song Thrushes thriving across Wales, for the UK as a whole they are red-listed under the Birds of Conservation Concern 3 (Eaton et al., 2009).
Graham Rees
Fieldwork 2003-07 (based on 490 tetrads)
Red = breeding confirmed = 178
Orange = breeding probable = 215
Yellow = breeding possible = 11
Total tetrads in which registered = 404 (82.4%)
Reader Comments