For more information about Brent Geese: https://www.rspb.org.uk/birds-and-wildlife/wildlife-guides/bird-a-z/brent-goose/
Brent Geese are Overwintering here in the area (probaly from Siberia). They graze on the fields and swim in the river in large flocks. This is why you
hear so many gas guns as the farmers try to protect their crops from too much grazing. They seem to favour certain fields but like the young shoots of winter wheat.