Cetti’s Warbler – 2003-07 breeding

Cettia cetti – TELOR CETTI – Breeding resident

Comparison with previous atlas:

Breeding confirmed11
Breeding probable64
Breeding possible7
No of tetrads occupied14 (of 478)5 (of 490)
Percentage of tetrads1.5%1%

Most records of Cetti’s warblers are of singing males being heard. Since its colonisation, which began at Rhoscrowther in 1983, following the first one recorded at Bosherston in the winter of 1968, breeding has been variously established by trapping females with brood patches, seeing adults carrying food for nestlings, fledglings fresh out of the nest being observed and juveniles trapped at the close of the nesting season. Males are polygamous, serving up to four females, so singing males represent territories rather than pairs.

During the 1984-88 survey they were recorded at Rhoscrowther, Kilpaison, Pwllcrochan, Penally, Tenby and the Teifi Marshes, in a total of seven tetrads. Between surveys they were also found in the breeding season at Freshwater East, Castle Martin Corse and Llangloffan Fen. Numbers grew progressively at the Teifi Marshes to reach 23 singing males by 1995, all bar three of these being in Ceredigion, a short cold snap in the winter of 1996 almost eradicating them. By the time of the 2003-07 survey there were two singing males in the Pembrokeshire part of the Teifi Marshes, others being recorded at Tenby, Penally, the Ritec and at Goodwick Moor where fledglings were seen in 2006, covering a total of five tetrads.

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 Cetti’s Warbler in Pembrokeshire