Guy Edwardes / Dalmatian pelican (Pelecanus crispus), portrait. Lake Kerkini, Sintik, Greece. January.

Ingo Arndt / Large flock of Eastern / Great White Pelican (Pelecanus onocrotalus) preening, Lake Nakuru, Kenya

David Pattyn / Dalmatian pelicans (Pelecanus crispus) fighting for fish. Lake Kerkini, Greece. February. Vulnerable species.

Staffan Widstrand,Staffan Widstrand / Spot-billed Pelican (Pelecanus philippinensis) Great white egret, (Casmerodius albus) Little egret (Egretta garzetta) Eurasian flamingo, (Phoenicopterus roseus) Spoonbill (Platalea leucrodia) reflecte...

David Pattyn / Dalmatian Pelican (Pelecanus crispus) close-up of a group in last afternoon light. Lake Kerkini, Greece. February

David Pattyn / Dalmatian Pelican (Pelecanus crispus) portrait, Lake Kerkini, Greece. February. Highly honoured in the Birds Category of Nature's Best Photography Windland Smith Rice International Awards Competition...

Juan Carlos Munoz / Double-crested Cormorants (Phalacrocorax auritus) and Brown pelicans (Pelecanus occidentalis) on small island, Isla Contoy National Park, Quintana Roo, Yuccatan Penninsula, Mexico

David Tipling / Dalmatian Pelicans (Pelicanus crispus) being fed by fisherman at Lake Kerkini, Northern Greece, February

Bence Mate / Close up portrait of Eastern white pelican head (Pelecanus onocrotalus) Danube Delta, Romania. Finalist in the Wildlife Photographer of the Year Awards (WPOY) Competition 2016.

Bence Mate / Eastern white pelican (Pelecanus onocrotalus) Danube Delta, Romania

Richard Du Toit / Aerial view of four Eastern white pelicans (Pelecanus onocrotalus) flying over water, Zululand, South Africa

Wild Wonders of Europe / Presti / White pelican (Pelecanus onolocratus) in flight, Danube Delta, Romania, May 2009