Roger Powell / Gadwall pair (Mareca strepera) swimming in tandem. Potterick Carr Nature Reserve, Doncaster, Yorkshire, England, UK, March.

Nick Hawkins / American wigeon (Anas / Mareca americana) male, Anchorage Provincial Park, Grand Manan Island, New Brunswick, Canada, June.

Nick Hawkins / American wigeon (Anas / Mareca americana) male, Anchorage Provincial Park, Grand Manan Island, New Brunswick, Canada, June.

Nick Hawkins / American wigeon (Anas / Mareca americana) nest with seven eggs, Anchorage Provincial Park, Grand Manan Island, New Brunswick, Canada, June.

David Tipling / Eurasian wigeon (Anas penelope) male in flight, Holkham, north Norfolk, England, UK. January.

David Tipling / Eurasian wigeon (Anas penelope) male in flight against blue sky, Holkham, north Norfolk, England, UK. January.

Mateusz Piesiak / Eurasian wigeon (Mareca penelope) male, standing in snow, Wrolaw, Lower Silesia, Poland. February.

Mateusz Piesiak / Gadwall (Mareca strepera) portrait, Poland. February.

Nick Upton / Gadwall (Anas strepera) male courting two females, Magor Marsh nature reserve, Gwent Levels, Wales, UK, March.

Nick Upton / Gadwall (Anas strepera) male swimming, Magor Marsh nature reserve, Gwent Levels, Wales, UK, March.

Nick Upton / Mallard (Anas platyrhynchos), Common teal (Anas crecca) and Wigeon (Anas penelope) flock standing on frozen lake, Cannop Ponds, Forest of Dean, Gloucestershire, UK, December.

Robin Chittenden / Wigeon (Anas penelope) suffering from avian flu, resting on beach, Norfolk, UK. October, 2022.