David Pattyn / Grey heron (Ardea cinerea) foraging in a shallow lake on a misty morning alongside other herons, La Dombes lake area, France, June

Sergey Gorshkov / NOT FOR WEBSITE Close-up of Brown bear (Ursus arctos) in lake, Kamchatka, Far east Russia, August

Ben Hall / 2020VISION / Grey heron (Ardea cinerea) beneath waterfall. Ambleside, Lake District, UK, November. Highly commended, 'Habitat' category, British Wildlife Photography Awards (BWPA) competition 2012. Did you know? I...

Juan Carlos Munoz / Aerial view of flock of Flamingos flying over the salt lake, Lake Natron, Rift Valley, Tanzania, August 2009

Ben Hall / 2020VISION / Grey heron (Ardea cinerea) standing on rock at the base of a waterfall, Lake District NP, Cumbria, England, UK, November

Oriol Alamany / People and an iceberg in Lake Grey with Valle del Frances in the background, Torres del Paine National Park, Patagonia, Chile

Oriol Alamany / Grey glacier over Grey lake, Torres del Paine National Park, Patagonia, Chile

Bence Mate / Confrontation between a great egret (Ardea alba) and grey heron (Ardea cinerea), Lake Csaj, Kiskunsagi National Park, Hungary.

Andrew Parkinson / Pair of Mallard ducks (Anas platyrhynchos) on a lake in dawn, Derbyshire, UK. April (non-ex)

Mary McDonald / Flock of Gray-headed Gulls (Chroicocephalus cirrocephalus) flying over Lake Nakuru, Kenya, East Africa

Wild Wonders of Europe / Radisics / Grey heron (Ardea cinerea) in flight over Lake Skadar, Lake Skadar National Park, Montenegro, May 2008

Mark Moffett / Amazon Ant (Polyergus sp) group returning to their home nest at the conclusion of a slave raid, grey slave ant carries one of their pupa, near Lake Tahoe, California

Jose B. Ruiz / Grey heron {Ardea cinerea} wading in lake, Donana NP, Sevilla, spain

Jim Brandenburg / Timber Wolf (Canis lupus) walking on frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) running across frozen Kawishiwi Lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) trio crossing frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pack along water's edge, Moose Lake, Boundary Waters Canoe Area Wilderness, Minnesota

David Pattyn / Grey heron (Ardea cinerea) is foraging in a lake in the early morning, La Dombes lake area, France, June

Terry Whittaker / 2020VISION / Grey heron (Ardea cinerea) flying over a frozen lake, Regents Park, London, England, UK, February

Terry Whittaker / 2020VISION / Grey herons (Ardea cinerea) fighting over food on a frozen lake, Regents Park, London, England, UK, February

Terry Whittaker / 2020VISION / Grey herons (Ardea cinerea) fighting over food on a frozen lake, Regents Park, London, England, UK, February

Terry Whittaker / 2020VISION / Woman on the shore of a frozen lake, feeding a group of Grey herons (Ardea cinerea), Regents Park, London, England, UK, February. Model released.

Terry Whittaker / 2020VISION / Woman on the shore of a frozen lake, feeding a group of Grey herons (Ardea cinerea), Regents Park, London, England, UK, February. Model released.

Terry Whittaker / 2020VISION / Grey herons (Ardea cinerea) standing on a frozen lake, Regents Park, London, England, UK, February

Fergus Gill / 2020VISION / Grey Heron (Ardea cinerea) walking across frozen lake in evening light. Glasgow, Scotland, November.

Rolf Nussbaumer / Eastern grey fox (Urocyon cinereoargenteus) adult at night climbing Oak tree (Quercus virginiana) Dinero, Lake Corpus Christi, South Texas, USA.

Rolf Nussbaumer / Eastern grey fox (Urocyon cinereoargenteus) adult at night standing by Oak tree (Quercus virginiana) Dinero, Lake Corpus Christi, South Texas, USA.

Rolf Nussbaumer / Eastern grey fox (Urocyon cinereoargenteus) adult at dusk in Oak tree (Quercus virginiana), Dinero, Lake Corpus Christi, South Texas, USA.

Ben Hall / 2020VISION / Grey heron (Ardea cinerea) standing on rock at the base of a waterfall, Lake District NP, Cumbria, England, UK, November

Bertie Gregory / 2020VISION / Grey heron (Ardea cinerea) flying past a family using a pedal boat on Regent's Park boating lake, London, England, UK, April 2011

Ben Hall / 2020VISION / Grey heron (Ardea cinerea) standing on rock at the base of a waterfall, Lake District NP, Cumbria, England, UK, November

Bertie Gregory / 2020VISION / Grey heron (Ardea cinerea) stanign on the shore of Regent's Park boating lake with a family in the background using a pedal boat, London, England, UK, April

Bertie Gregory / 2020VISION / Portrait of a Grey heron (Ardea cinerea) with a family using a pedal boat on Regent's Park boating lake, London, England, UK, April

Jim Brandenburg / Timber Wolf (Canis lupus) and fox tracks in snow near lake, Minnesota

Terry Whittaker / 2020VISION / Dead Grey heron (Ardea cinerea) chick in lake, Regent's Park, London, UK, April 2011

Laurent Geslin / Two Grey herons (Ardea cinerea) fighting by Lake Geneva, France

Guy Edwardes / Grey-headed Kingfisher (Halcyon leucocephala) perched on branch, Lake Manyara National Park, Tanzania, Africa, February

Colin Monteath / Frosty winter dawn from ridge above Grey Lake with Hawkdun Range behind, central Otago, New Zealand

Wild Wonders of Europe / Widstrand / Grey heron (Ardea cinerea) in flight, Lake Kerkini, Macedonia, Greece, May 2009

Wild Wonders of Europe / Damschen / View over camera out of hide towards lake with Black storks (Ciconia nigra) Grey herons (Ardea cinerea) and Great egrets (Ardea alba) Elbe Biosphere Reserve, Lower Saxony, Germany, September 2008

Alan Williams / Grey heron (Ardea cinerea) in flight over lake, Midlands, UK, February

Kerstin Hinze / Grey-bellied / Baikal Bullfinch (Pyrrhula pyrrhula griseiventris) with a maple seed in its beak, Lake Kussharo, Hokkaido, Japan February 2007

Jack Dykinga / Sunlight illuminates sea spray which blows over icebergs on Grey Lake, against a backdrop of storm shrouded peaks in the Torres del Paine National Park, Chile

Jack Dykinga / Sunlight illuminates icebergs on Grey Lake, against a backdrop of storm shrouded peaks in the Torres del Paine National Park, Chile

Jack Dykinga / The frozen shores of Grey Lake, with icebergs, against a backdrop of storm shrouded peaks in the Torres del Paine National Park, Chile

Michel Poinsignon / Grey heron (Ardea cinerea) standing in lake, Lorraine, France

Michel Poinsignon / Grey heron (Ardea cinerea) standing in lake, Lorraine, France

Michel Poinsignon / Grey heron (Ardea cinerea) standing in lake and preening, Lorraine, France

Jose B. Ruiz / Grey heron {Ardea cinerea} wading in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} taking off from perch in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} standing in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} catching fish in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} standing in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} standing in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} wading in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} standing in lake, with black crowned night heron {Nycticorax nycticorax} Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} standing in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} eating a fish in lake, Donana NP, Sevilla, spain

Jose B. Ruiz / Grey heron {Ardea cinerea} standing in lake, Donana NP, Sevilla, spain

Charlie Hamilton James / Partially frozen lake with immature Hooper swan, Oslo city park, Norway

Steven David Miller / Male Great grey bowerbird {Chlamydera nuchalis} adjusting twigs in bower, in garden, Lake Argyle, Western Australia

Steven David Miller / Male Great grey bowerbird {Chlamydera nuchalis} tending to the entrance of bower, in garden, Lake Argyle, Western Australia

Steven David Miller / Male Great grey bowerbird {Chlamydera nuchalis} standing in front of bower, in garden, Lake Argyle, Western Australia - Sticks, bones, glass, berries and leaves make up the treasures in this bower

Jabruson / Grey headed gull (Chroicocephalus cirrocephalus) standing on log in water, Lake Nakuru NP, Kenya

Peter Blackwell / African grey hornbill (Tockus nasutus) perched on Acacia branch, Lake Naivasha NP, Kenya

Steven David Miller / Great grey bowerbird male at bower {Chlamydera nuchalis} Lake Argyle, Western Australia

Steven David Miller / Great grey bowerbird male tending bower {Chlamydera nuchalis} Lake Argyle, Western Australia

Bernard Castelein / Grey-backed fiscal shrike {Lanius excubitoroides} Lake Baringo, Kenya

Anup Shah / Grey headed gull {Chroicocephalus cirrocephalus} taking-off, Lake Nakuru NP, Kenya

Colin Monteath / Blue icebergs at sunset in Lago Grey, Torres del Paine National Park, Patagonia, Chile

Colin Monteath / Chilean Firebush (Embothrium coccineum) and iceberg, Lago Grey, Patagonia, Chile

Jim Brandenburg / Timber Wolf (Canis lupus) trio running through deep snow on frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) running across frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) overlooking frozen lake, Superior National Forest, Minnesota

Tim Fitzharris / Timber Wolf (Canis lupus) adult, walking along the edge of a lake, Montana

Tim Fitzharris / Timber Wolf (Canis lupus) pauses while walking through lake, Montana

Jim Brandenburg / Timber Wolf (Canis lupus) running across frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pack crossing frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) walking across frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pair on frozen snow-covered lake, northern Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) trio crossing frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) trio crossing snow-covered frozen lake, Boundary Waters Canoe Area Wilderness, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) trio crossing frozen lake, Minnesota

Michael Quinton / Common Loon (Gavia immer) pair on misty lake in the spring, Wyoming

Jim Brandenburg / Timber Wolf (Canis lupus) testing lake ice, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) standing on rock overlooking water, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pack running over frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) trio running across frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) trio running across frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) pair crossing frozen lake, Northwoods, Minnesota

Shin Yoshino / Grey Heron (Ardea cinerea) flying over lake, Japan

Jim Brandenburg / Timber Wolf (Canis lupus) running across frozen lake, Minnesota

Jim Brandenburg / Timber Wolf (Canis lupus) running across frozen lake, Minnesota

Paul Hobson / Grey heron by lake in park {Ardea cinerea} UK

GEORGETTE DOUWMA / Grey heron {Ardea cinerea} standing by lake, Regents Park, London, UK