Bence Mate / Cormorant (Phalacrocorax carbo) and Great egret (Ardea alba) fighting over fish, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary, January.

Bence Mate / Great egret (Ardea alba) fighting with Cormorant (Phalacrocorax carbo) over fish, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary.

Andy Trowbridge / Little pied cormorant (Microcarbo melanoleucos previously known as Phalacrocorax melanoleucus) perched on branch with wings outstretched. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Pied shag/cormorant (Phalacrocorax varius) in flight. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Little pied cormorant (Microcarbo melanoleucos) perched on branch. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Pied shag/cormorant (Phalacrocorax varius) in flight. Ashley River, Canterbury, New Zealand. July.

Andy Trowbridge / Pied shag/cormorant (Phalacrocorax varius) portrait. Ashley River, Canterbury, New Zealand. July.

Ingo Arndt / Eurasian Cormorant colony (Phalacrocorax carbo) and Great white pelican (Pelecanus onocrotalus), Danube Delta, Romania

Jiri Lochman / Little pied cormorant (Phalacrocorax melanoleucos), Cape Range National Park, Ningaloo Coast UNESCO Natural World Heritage Site, Western Australia, Australia.

Markus Varesvuo / Cormorant (Phalacrocorax carbo) in aggressive display, fighting over food with a Great White Egret (Ardea alba), Hungary, January.

Markus Varesvuo / Cormorant (Phalacrocorax carbo) and Great white egret (Egretta alba) fighting over fish catch, Hungary, January

Roger Powell / Little pied cormorant (Phalacrocorax melanoleucos) sitting on marine post and preening. Werribee Sewerage Farm, Werribee, Victoria, Australia