Resident and suspected immigrant.
Ssp. pygmaeola locally found on East coast from Winterton to Waxham (including Winterton Dunes NNR) with occasional sightings elsewhere in the region.
Vagrants from resident colonies are occasionally recorded.
Recorded in 8 (12%) of 69 10k Squares.
First Recorded in 1873.
Last Recorded in 2019.