Terry Whittaker / Grey heron ( Ardea cinerea) flying at night, Amsterdam, Netherlands. April.

Thomas Hinsche/ BIA / Black-crowned Night Heron (Nycticorax nycticorax) juvenile foraging, Hungary

Thomas Hinsche/ BIA / Black-crowned Night Heron (Nycticorax nycticorax) juvenile, Hungary

Thomas Hinsche/ BIA / Black-crowned Night Heron (Nycticorax nycticorax) with fish prey, Hungary

John Chan / Juvenile Yellow-crowned night heron (Nyctanassa violacea)predating a twig, learning stalking and hunting skills, Southern California, USA, July.

Bence Mate / Black crowned night heron (Nycticorax nycticorax) at twilight with other herons in the background, including Grey heron (Ardea cinerea) in flight, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hun...

Bence Mate / Grey heron (Ardea cinerea) with lightning storm at night. Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. May 2012.

Bence Mate / Group of Great egrets (Ardea alba), Grey heron (Ardea cinerea) and Eurasian spoonbill (Platalea leucorodia) at night with stars and moon. Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. May.

Bence Mate / Grey heron (Ardea cinerea) face to face in lake, at night with stars, Lake Csaj, Kiskunsagi National Park, Pusztaszer, Hungary. July.

Bence Mate / Great egrets (Ardea alba) and Grey heron (Ardea cinerea) squabbling over fish, with some in flight. Blurred motion photograph, Lake Csaj, Pusztaszer, Hungary. February.

Bence Mate / Great white egret (Ardea alba) silhouetted at sunset, Lake Csaj, Pusztaszer, Hungary, February. Winner of the Portfolio category of the Terre Sauvage Nature Images Awards competition 2015.

Georg Scharf / Black-crowned Night Heron (Nycticorax nycticorax) foraging, Hungary