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

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