Jack Dykinga / Northern pintail (Anas acuta) dabbling at sunset. Bosque del Apache, New Mexico, USA, December.

Nick Upton / Northern pintail drake (Anas acuta) swimming, Gloucestershire, UK, February.

Nick Upton / Northern pintail drake (Anas acuta) preening, Gloucestershire, UK, February.

Nick Upton / Northern pintail drake (Anas acuta) dabbling, Gloucestershire, UK, February.

Connor Stefanison / Northern pintail (Anas acuta) drake stretching its wings on a small pond, Ladner, British Columbia, Canada.

Mike Potts / Pintails (Anas acuta) a flock in flight. Maltraeth Estuary, Anglesey, North Wales, UK. February.

Nick Upton / Shoveler (Anas clypeata) drakes, landing on, preening and taking off from flooded pastureland, with a mixed flock of Common teal (Anas crecca), Pintail (Anas acuta), Wigeon (Anas penelope) and Lapwing...

Nick Upton / Shoveler drakes (Anas clypeata) foraging on flooded pastureland before taking off, with Common teal (Anas crecca), Pintail (Anas acuta), Wigeon (Anas penelope) and a Redshank (Tringa totanus) foraging...

Nick Upton / Pair of Pintails (Anas acuta) preening on the margins of a marshland pool, Gloucestershire, England, UK, February.

Nick Upton / Pair of Pintails (Anas acuta) preening on the margins of a marshland pool, Gloucestershire, England, UK, February.

Nick Upton / Pair of Pintails (Anas acuta) preening on the margins of a marshland pool, Gloucestershire, England, UK, February.

Nick Upton / Pintail (Anas acuta) courtship display, male swimming after a female and bobbing his head, Gloucestershire, England, UK, January.