LESSER SCAUP Aythya affinis A.
Vagrant; rare – from North America. This species was ex BBRC from 2015-2019, when it was on the list of the WBRC from the 1st January 2015 to the 31st December 2019. It reverted to the BBRC on the 1st January 2020.
1 record:
1). 2018, 20th October – 31st December: Llyn Llygeirian – immature male, photographed. (S&RBiW 2019 p6).