🐩 Bird Migration Map

When do sedge warblers arrive in and leave the UK?

A summer visitor in the records: sightings jump in mid April and fall away after late August.

When do sedge warblers arrive in the UK?
In the GBIF records, UK sightings of the sedge warbler rise sharply from mid April and are near their peak by mid April.
When do sedge warblers leave the UK?
UK sightings fall away after late August.
Where do sedge warblers go in winter?
From December to February the strongest signal in the effort-adjusted GBIF records is around Zambia and Zimbabwe. The globe shows the whole winter range month by month.

Sedge warbler in the UK, month by month

JanFebMarAprMayJunJulAugSepOctNovDec

Bars: this species’ share of all UK bird records in GBIF (CC0/CC BY 4.0 only), by month, scaled to the peak month. Based on 134,708 UK records (occurrence search API, country=GB, weekly). Dates come from sightings, not a survey, so treat them as a guide.

See the sedge warbler migration on the 3D globe →

About the sedge warbler

The sedge warbler is an Old World warbler in the genus Acrocephalus. It is a medium-sized warbler with a brown, streaked back and wings and a distinct pale supercilium. Sedge warblers are migratory, crossing the Sahara to get from their European and Asian breeding grounds to spend winter in Africa. 


From the Wikipedia article “Sedge warbler” (revision 1315258838), CC BY-SA 4.0, shortened at a sentence end. Winter/summer areas: country containing the monthly hotspot of effort-adjusted GBIF records, using Natural Earth boundaries (public domain).

Other UK summer visitors: see the full list with arrival and departure dates.