A rare visitor to the UK and a current BBRC rarity.
Accepted records (4)[]
- 1961: Staines Reservoirs (Middx), one on June 24th-25th (LBR 56, Hardwick & Self)
- 1964: King George VI Reservoir (Middx), one from June 22nd-24th (LBR 56, Hardwick & Self)
- 1977: Staines Reservoirs (Middx), one on August 17th (LBR 56, Hardwick & Self)
- 2005: King George VI/Staines Reservoirs (Middx), a second-summer from May 22nd-25th (LBR 2005)