Wim van den Heever / Pied avocet (Recurvirostra avosetta) feeding in shallow water at dawn, Etosha National Park, Namibia.

Bertie Gregory / 2020VISION / Avocet (Recurvirostra avosetta) silhouetted as its feeds at sunrise, Brownsea Island, Dorset, winter.

Bertie Gregory / 2020VISION / Avocet (Recurvirostra avosetta) feeding along side a Redshank (Tringa totanus), Brownsea Island, Dorset, England, UK, September

Terry Whittaker / 2020VISION / Avocet (Recurvirostra avosetta) chick in drying pool on grazing marsh, Elmley marshes, RSPB Greater Thames Futurescapes Project, Isle of Sheppey, North Kent, UK, July

Terry Whittaker / 2020VISION / Avocet (Recurvirostra avosetta) trying to drive Shelduck (Tadorna tadorna) pair away from breeding grounds, Oare marshes, RSPB Greater Thames Futurescapes Project, North Kent, UK, June

Terry Whittaker / 2020VISION / Avocet (Recurvirostra avosetta) flock in flight, Elmley marshes, RSPB Greater Thames Futurescapes Project, Isle of Sheppey, North Kent, UK, October

Ole Jorgen Liodden / Avocet (Recurvirostra avosetta) foraging at dusk. Netherlands, May.

Terry Whittaker / 2020VISION / Avocet (Recurvirostra avosetta) in mist on grazing marsh at dawn with cattle grazing in the background, Thames Estuary, Elmley Marshes RSPB reserve, North Kent, UK,, April 2011. Photographer quote: 'G...

Terry Whittaker / 2020VISION / Avocet (Recurvirostra avosetta) in mist on grazing marsh at dawn, Thames Estuary, Elmley Marshes RSPB reserve, North Kent, UK, April 2011. 2020VISION Book Plate.

Terry Whittaker / 2020VISION / Avocet (Recurvirostra avosetta) in mist on grazing marsh at dawn, Thames Estuary, Elmley Marshes RSPB reserve, North Kent, UK, April 2011

Andrew Parkinson / Avocets (Recurvirostra avosetta) flock of adults in flight at Snettisham RSPB Reserve. Norfolk, UK, September (non-ex)

Andrew Parkinson / Avocets (Recurvirostra avosetta) flock of adults in flight at Snettisham RSPB Reserve. Norfolk, UK, September (non-ex)