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The UK Bird Atlas

Eastern Olivaceous Warbler (Iduna pallida)Where and when to see it in the UK

Scarce migrant · reporting peaks September · Reed Warblers and Allies · BOU category A

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

Eastern Olivaceous Warbler (Iduna pallida)
Klara Matusevich (Klaram), CC BY-SA 2.5, 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 Olivaceous 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 Olivaceous Warbler has been recorded in 12 of the 2,971 10 km squares covering UK land (0%) in records to 2026. Scarce migrant in the UK. Reporting peaks in September.

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

Records by 10 km square

SquareWhereRecordsYearsVerified
TA27East Riding of Yorkshire, England362010 to 2024unverified
TA09North Yorkshire, England212023unverified
HU31Shetland Islands, Scotland22023unverified
SU60Hampshire, England562019unverified
HZ27Shetland Islands, Scotland32009 to 2019unverified
HU30Shetland Islands, Scotland22016unverified
HU56Shetland Islands, Scotland22015unverified
HU42Shetland Islands, Scotland92002 to 2013unverified
HU45Shetland Islands, Scotland12013unverified
NO60Fife, Scotland192012unverified
SY66Dorset, England52003 to 2008unverified
NK02Aberdeenshire, Scotland52000unverified

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.