Sedge Warbler – 2003-07 breeding

Acrocephalus schoenobaenus – TELOR YR HESG – Breeding summer visitor and passage migrant. Not recorded from November to February

Comparison with previous atlas:

1984-882003-07
Breeding confirmed3027
Breeding probable91109
Breeding possible1311
No of tetrads occupied134 (of 478)147 (of 490)
Percentage of tetrads28%30%

The Sedge Warbler is a small, chubby warbler with brown upperparts streaked black, creamy white underparts and a broad cream stripe above the eye. Its varied chattering song is often delivered whilst it is perched in full view or in its song–flight. It is to be found mostly in damp places like reedbeds, bogs and around ponds. Its nest is placed in bushes or tall vegetation, near or on the ground. It is a summer visitor.

The UK population level has varied considerably over the years, affected mainly by varying rainfall in its winter quarters in West Africa. Analysis of various data sets gathered by the BTO shows year to year fluctuations, with similar levels of population in the UK in the years 1988 and 2007, which is relevant to the two local surveys. The 2003-07 survey results show an almost 10% increase compared with those of 1984-88.This suggests that about 700 pairs were nesting in Pembrokeshire at the end of 2007, compared to 650 pairs in 1988.

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 Sedge Warbler in Pembrokeshire