Chase Dekker / Lesser Flamingo (Phoenicopterus minor) wading, Amboseli National Park, Kenya

Winfried Wisniewski / White Stork (Ciconia ciconia) on nest, Extremadura, Spain

Marie Read / American avocet (Recurvirostra americana), adult in breeding plumage foraging by sweeping its bill from side to side through shallow water, Orange County, California, USA, 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 / Great blue heron (Ardea herodias) predating a Smelt (Osmeridae), Southern California, USA, October.

Paul Souders/ Worldfoto / Black Heron (Egretta ardesiaca) canopy hunting, Chobe River, Chobe National Park, Botswana

Benjamin Olson / Gentoo Penguin (Pygoscelis papua) wading, Antarctica

Donald M. Jones / Glossy Ibis (Plegadis falcinellus), central Florida

Jan Wegener/ BIA / Grey Heron (Ardea cinerea) spreading wings on frozen lake, Berlin, Germany

Agustin Esmoris / Roseate Spoonbill (Platalea ajaja) preening, Argentina