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The UK Bird Atlas

Dartford Warbler (Curruca undata)Where and when to see it in the UK

Scarce migrant · reporting peaks January · Sylviid Warblers and Allies · BOU category A

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

Dartford Warbler (Curruca undata)
El Golli Mohamed, 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.

Dartford 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.

Dartford Warbler has been recorded in 209 of the 2,971 10 km squares covering UK land (7%) in records to 2026. Scarce migrant in the UK. Reporting peaks in January.

Conservation status: Near Threatened (IUCN Red List, NT)
View on the IUCN Red List

Records by 10 km square

SquareWhereRecordsYearsVerified
TM46Suffolk, England3392000 to 2026unverified
SY98Dorset, England2672000 to 2026unverified
SZ09Bournemouth, Christchurch and Poole, England1462006 to 2026unverified
SU96Surrey, England1362006 to 2026unverified
SU20Hampshire, England1212005 to 2026unverified
SU30Hampshire, England1112006 to 2026unverified
SU10Hampshire, England1092003 to 2026unverified
SY99Dorset, England1092006 to 2026unverified
SZ38Isle of Wight, England1042000 to 2026unverified
SU84Surrey, England912006 to 2026unverified
SU94Surrey, England802005 to 2026unverified
SY08Devon, England742006 to 2026unverified
SS94Somerset, England712006 to 2026unverified
SU11Hampshire, England442006 to 2026unverified
TQ43East Sussex, England402006 to 2026unverified
SU82West Sussex, England402006 to 2026unverified
SZ39Hampshire, England352006 to 2026unverified
SU73Hampshire, England312006 to 2026unverified
SS84Somerset, England212006 to 2026unverified
TQ06Surrey, England192005 to 2026unverified
SS49Swansea, Wales142006 to 2026unverified
SX97Devon, England82006 to 2026unverified
TQ53East Sussex, England82008 to 2026unverified
SX87Devon, England72006 to 2026unverified
SU66West Berkshire, England62006 to 2026unverified
SU46West Berkshire, England62006 to 2026unverified
SU01Dorset, England52006 to 2026unverified
SE65York, England22026unverified
SW64Cornwall, England12026unverified
TL48Cambridgeshire, England12026unverified
TR35Kent, England12026unverified
SS68Swansea, Wales1442006 to 2025unverified
SS58Swansea, Wales1372002 to 2025unverified
TM34Suffolk, England1152006 to 2025unverified
SZ57Isle of Wight, England862000 to 2025unverified
SZ08Dorset, England662005 to 2025unverified
ST14Somerset, England562006 to 2025unverified
SY88Dorset, England552006 to 2025unverified
SU21Hampshire, England552006 to 2025unverified
SY09Devon, England472000 to 2025unverified
SZ19Bournemouth, Christchurch and Poole, England452006 to 2025unverified
SZ48Isle of Wight, England262004 to 2025unverified
SS78Neath Port Talbot, Wales212005 to 2025unverified
SZ29Hampshire, England202006 to 2025unverified
ST13Somerset, England202006 to 2025unverified
SU93Surrey, England112006 to 2025unverified
TG14Norfolk, England82006 to 2025unverified
SJ91Staffordshire, England62006 to 2025unverified
ST35Somerset, England62000 to 2025unverified
SZ07Dorset, England52006 to 2025unverified
SZ89West Sussex, England42022 to 2025unverified
TQ57Kent, England32022 to 2025unverified
SW43Cornwall, England32024 to 2025unverified
TG42Norfolk, England22018 to 2025unverified
ST24Somerset, England12025unverified
SS48Swansea, Wales2162000 to 2024unverified
SS87Bridgend, Wales2002000 to 2024unverified
SU95Surrey, England1692006 to 2024unverified
SU91West Sussex, England342006 to 2024unverified
SU86Bracknell Forest, England302006 to 2024unverified
SU75Hampshire, England182006 to 2024unverified
TQ07Surrey, England32022 to 2024unverified
TQ14Surrey, England22006 to 2024unverified
TQ01West Sussex, England22003 to 2024unverified
TQ48Redbridge, England22023 to 2024unverified
TV59East Sussex, England12024unverified
SO92Gloucestershire, England12024unverified
TQ28Brent, England12024unverified
SY66Dorset, England12024unverified
SU60Hampshire, England12024unverified
ST16Vale of Glamorgan, Wales12024unverified
TM45Suffolk, England1022000 to 2023unverified
TM47Suffolk, England392003 to 2023unverified
TM35Suffolk, England242008 to 2023unverified
SZ69Portsmouth, England52006 to 2023unverified
ST38Newport, Wales42010 to 2023unverified
TQ64Kent, England42003 to 2023unverified
SP91Buckinghamshire, England12023unverified
TQ99Essex, England12023unverified
SU98Buckinghamshire, England12023unverified
TQ42East Sussex, England162006 to 2022unverified
TG04Norfolk, England102010 to 2022unverified
TR23Kent, England22022unverified
TQ27Wandsworth, England22022unverified
TL14Central Bedfordshire, England22008 to 2022unverified
TQ16Surrey, England12022unverified
ST59Monmouthshire, Wales12022unverified
TR37Kent, England12022unverified
SN03Pembrokeshire, Wales12022unverified
TQ26Sutton, England12022unverified
SU83Hampshire, England1272006 to 2021unverified
SS89Neath Port Talbot, Wales312005 to 2021unverified
TR01Kent, England42010 to 2021unverified
SJ94Staffordshire, England12021unverified
ST29Caerphilly, Wales12021unverified
ST36North Somerset, England762005 to 2020unverified
TQ67Kent, England12020unverified
SO61Gloucestershire, England12019unverified
SS97Vale of Glamorgan, Wales52008 to 2018unverified
TM48Suffolk, England22007 to 2017unverified

Showing the 100 most recent of 209 squares.

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.