BLACK BRANT Branta bernicla nigricans.
Vagrant; rare race - from North America. This is no longer considered by BBRC having been dropped from its list of races considered in 2006. The WBRC lists it as a race where it would like to receive submissions:
1 accepted record:
1). 1997, 23rd March – 30th: Penrhos Coastal Park – 1. (British Birds 91 p464).