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The UK Bird Atlas

Eastern Bonelli's Warbler (Phylloscopus orientalis)Where and when to see it in the UK

Vagrant · reporting peaks January · Leaf Warblers · BOU category A

Records to 2026-08-16 · build 2026-08-31

Eastern Bonelli's Warbler (Phylloscopus orientalis)
Telegro, CC BY-SA 4.0, via Wikimedia Commons

Too few records to rate squares by month. Each marked square has at least one record; the table below gives the count and years.

Eastern Bonelli's Warbler: relative reporting rate by 10 km square, September

Contains OS data © Crown copyright and database right 2026 (grid squares, place names from OS Open Names). Northern Ireland place names: OSNI Open Data, OGL v3.0. County and country boundaries: Office for National Statistics, Open Government Licence v3.0. Coastline: Natural Earth. Bird records from the data partners listed here.

Eastern Bonelli's Warbler has been recorded in 8 of the 2,971 10 km squares covering UK land (0%) in records to 2026. Vagrant in the UK. Reporting peaks in January.

Conservation status: Least Concern (IUCN Red List, LC)
View on the IUCN Red List

Records by 10 km square

SquareWhereRecordsYearsVerified
TR01Kent, England12025unverified
HU56Shetland Islands, Scotland12025unverified
SC16Isle of Man22016unverified
NZ38Northumberland, England52014unverified
HU43Shetland Islands, Scotland32014unverified
HU32Shetland Islands, Scotland12014unverified
SY67Dorset, England52009unverified
SY66Dorset, England12009unverified

Spotted an error in a square? Report it and it goes into the review queue. Read the methodology for how classes, flags and sensitive-species rules work. Data to 2026.