Ducks, Geese, Swans (Anatidae)

The brent goose is a small, dark goose - of similar size to a mallard. It has a black head and neck and grey-brown back, with either a pale or dark belly, depending on the race. Adults have a small white neck patch. It flies in loose flocks along the coast, rather than in tight skeins like grey geese. It is an Amber List species because of the important numbers found at just a few sites. (RSPB)

The Canada goose (Branta canadensis) is a large wild goose species with a black head and neck, white cheeks, white under its chin, and a brown body. Native to arctic and temperate regions of North America, its migration occasionally reaches northern Europe. It has been introduced to the United Kingdom, Ireland, New Zealand, Argentina, Chile, and the Falkland Islands.[2] Like most geese, the Canada goose is primarily herbivorous and normally migratory; it tends to be found on or close to fresh water.