John Waters / Wide-angle shot of wetland landscape, with Wigeon (Anas penelope), Shoveler (Anas clypeata) and Teal (Anas crecca), Greylake RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Male Shoveler (Anas clypeata) approaching a sleeping female, she leaves, Greylake RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Male Shoveler (Anas clypeata) swimming, Greylake RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Male Shoveler (Anas clypeata) swimming towards a female during courtship, Greylake RSPB Reserve, Somerset Levels, England, UK, February.

John Waters / Slow motion clip of Wigeon (Anas penelope) landing amongst mixed flock of Teal (Anas crecca) and Shovler (Anas clypeata), Greylake RSPB Reserve, Somerset Levels, England, UK, February.

Philippe Clement / Male Northern shoveler (Anas clypeata) feeding in wetland, Belgium, April.

Jussi Murtosaari / Northern shovelers (Anas clypeata), adult female with chicks, Finland, July.

Jussi Murtosaari / Northern shovelers (Anas clypeata), male in reedbed, Finland, May.

Jussi Murtosaari / Northern shovelers (Anas clypeata), adult male, Finland, May.

Bernard Castelein / Northern shoveler (Anas clypeata) flock in flight, Antwerpen, Belgium, February.

Dave Bevan / Male Northern shoveler (Anas clypeata) feeding, Carmarthenshire, Wales, UK, January.

Roger Powell / Northern shoveler (Anas clypeata) drake, moulting from eclipse into full winter plumage, Leighton Moss, Lancashire, UK. October.