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The UK Bird Atlas

American Cliff Swallow (Petrochelidon pyrrhonota)Where and when to see it in the UK

Scarce migrant · reporting peaks September · Swallows · BOU category A

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

American Cliff Swallow (Petrochelidon pyrrhonota)
Don DeBold, CC BY-SA 2.0, 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.

American Cliff Swallow: 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.

American Cliff Swallow has been recorded in 8 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
SV91Isles of Scilly, England542000 to 2024unverified
TR37Kent, England372023unverified
TR47Kent, England12023unverified
TR46Sea, off Kent12023unverified
SV81Isles of Scilly, England32017unverified
TM46Suffolk, England412016unverified
SY67Dorset, England122000unverified
SY66Dorset, England22000unverified

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.