Brent geese, Branta (bernicla) bernicla, in the saltmarshes in Holkham, North Norfolk, UK

Brent geese, Branta (bernicla) bernicla, in the saltmarshes in Holkham, North Norfolk, UK

Adult brant (Branta bernicla) feeding on eel grass in the shallow waters of San Ignacio Lagoon, Baja California Sur, Mexico.

Adult brant (Branta bernicla nigricans) feeding on eel grass in the shallow waters of San Ignacio Lagoon, Baja California Sur, Mexico

Adult brant (Branta bernicla nigricans) feeding on eel grass in the shallow waters of San Ignacio Lagoon, Baja California Sur, Mexico

Adult brant (Branta bernicla nigricans) feeding on eel grass in the shallow waters of San Ignacio Lagoon, Baja California Sur, Mexico

Brent geese flying over their Norfolk wintering grounds, Norfolk, England, United Kingdom, Europe

A flock of adult brant (Branta bernicla) on the wing in Hull Canal between the Baja California peninsula and Isla Magdalena, Baja California Sur, Mexico.

Brent Geese on Wadden Sea, Sylt Island, North Frisia, Schleswig-Holstein, Germany, Europe

Brent Geese above the Wadden Sea near Steenodde towards the lighthouse, Amrum, North Frisia, Schleswig-Holstein, Germany, Europe

Brent geese in the Wadden Sea near Steenodde, Amrum, North Friesland, Schleswig-Holstein, Germany

Brent Geese (Branta bernicla) reaching the bay of Mont-Saint-Michel to spend the night, Manche, Normandy, France.