Garden Warbler – 2003-07 breeding

Sylvia borin – TELOR YR ARDD – Breeding summer visitor and passage migrant. Not recorded in January, March and December

Comparison with previous atlas:

Breeding confirmed4714
Breeding probable133163
Breeding possible1316
No of tetrads occupied193 (of 478)193 (of 490)
Percentage of tetrads40.4%39.4%

Surely it was this summer visitor that inspired the acronym LBJ (little brown job). It does however possess a pleasant mellow warbling song, though its critics often refer to this as being like a “garbled Blackcap”. It nests low down in shrubs and trees around woodland edge, rides and glades.

The 2003-07 survey found a marked absence in the extreme south compared to the 1984-88 presence. Nonetheless the totals registered for each of the two surveys was identical. The abundance map in the 1988-91 National Atlas indicates near maximum density in Pembrokeshire, which suggests the 1988 county estimate of 2,000 pairs was realistic. Since then the BTO has used a number of survey methods to conclude that although there have been short term fluctuations in the population, there has been a shallow long term decline. The BBS quantifies this as a 25% decrease in Wales between 1994 and 2007, which suggests the Pembrokeshire population had dropped to about 1,500 pairs by 2007.

Graham Rees. Pembrokeshire County Bird Recorder 1981-2007

Records extracted from the Pembrokeshire Bird Reports which may contain more detail than shown here

More about the Garden Warbler in Pembs