There are two subspecies of Branta bernicla which regularly occur in Great Britain and Ireland.
The nominate race bernicla, known asDark-bellied Brent Goose, is
found at estuarine sites in eastern and southern England and southern Wales. The subspecies hrota, or Light-bellied Brent Goose, comprises four recognised biogeographical populations, two of which are found in the UK: the East Canadian High Arctic Light-bellied Brent Goose occurs primarily around Irish coasts, particularly in Northern Ireland, and the East Atlantic Light-bellied Brent Goose is found mainly at Lindisfarne, Northumberland.
The Goose & Swan Monitoring Programme (GSMP) monitors numbers and
breeding success of geese and swans in the UK during the non-breeding
season. GSMP is organised by WWT on behalf of WWT and JNCC.
Saving wetlands for wildlife & people
There are two subspecies of Branta bernicla which regularly occur in Great Britain and Ireland.
The nominate race bernicla, known as 
