David Woodfall / Mute Swans (Cygnus olor) swimming in Worcester city centre, during February 2014 floods, Worcester, England, UK, 10th February 2014.

Ernie Janes / Abstract photo of Tower Bridge, with blurred motion red bus, London, June 2013. Digitally manipulated.

Enrique López-Tapia de Inés / Thuli Maya Fuyal, widow, in her small room in Kathmandu, in Namaskar Association ‘House of Widows’. Culturally in Nepal women lose many rights when they become widows and may be treated badly by their...

Igor Shpilenok,Igor Shpilenok / Red Foxes (Vulpes vulpes) fighting outside ranger cabin window. Kronotsky Zapovednik Nature Reserve, Kamchatka Peninsula, Russian Far East, February.

Milan Radisics / Long-eared Owls (Asio otus) roosting in tree, Szeged city, Southern Hungary, February 2009

Jouan & Rius / Two Domestic cats outdoors looking in through window, France

Laurent Geslin / Common bluebottle {Calliphora vomitoria} on window pane, UK

Ashley Cooper / Triple glazed windows in old farmhouse refurbished to be as environmentally friendly as possible. Grayrigg, Cumbria, England, UK, April 2012.

Ashley Cooper / Triple glazed windows in old farmhouse refurbished to be as environmentally friendly as possible. Grayrigg, Cumbria, England, UK, April 2012.

Staffan Widstrand / House in Musteika Village, Lithuania, May 2015.

Staffan Widstrand / Wooden House in Musteika Village, Lithuania, May 2015.

Sven Zacek / View through glacier ice towards snow-covered mountains in Kongsfjorden fjord, Svalbard, Norway. June 2014.

Sven Zacek / View through glacier ice towards snow-covered mountains in Kongsfjorden fjord in Svalbard, Spitsbergen, Norway.

Sven Zacek / View through glacier ice towards snow-covered mountains in Kongsfjorden fjord in Svalbard, Spitsbergen, Norway.

Pascal Pittorino / Virginia creeper (Parthenocissus quinquefolia) covering a wall of house, Rougon Village, Verdon Natural Regional Park, Alpes de Haute Provence, France, October.

Staffan Widstrand / Kittiwakes (Rissa tridactyla) nesting on wall of house, Vardo town, Varanger Peninsula, Norway, March.

Espen Bergersen / Kittiwake (Rissa tridactyla) nesting colony on abandoned building in Pyramiden, Svalbard, Norway. June

Klein & Hubert / Adult long-haired female tabby cat sitting on a windowsill, France.

Klein & Hubert / Adult long-haired female tabby cat sitting on a windowsill, France.

Andy Rouse / Barn owl (Tyto alba) in old window, UK, March.

Hugh Pearson / Aerial of Mount Namuli taken from within helicopter, Mount Namuli, Mozambique, May 2011.

Jussi Murtosaari / Ice crystals forming on window, Jyvaskya, Keski-Suomi, Lansi- ja Sisa-Suomi / Central and Western Finland, Finland. January

Fabrice Cahez / Eurasian hoopoe (Upupa epops) flying into window, Vosges, France, June.

Paul Hobson / Small tortoishell butterfly (Aglais urticae) on a stained glass window of church on a sunny day Sheffield, England, UK, January.

Kim Taylor / Black domestic tom cat vocalising at rival from an upstairs window, Gavarnie, France.

Kirkendall-Spring / 'Closed' sign in boarded up shop window, Sprauge, Washington, USA, June 2014.

Wild Wonders of Europe / Zankl / Bicycles and luggage outside hotel in Stolpe, Peene river, Germany, August 2014.

Wild Wonders of Europe / Zankl / Bicycles and luggage outside hotel in Stolpe, Peene river, Germany, August 2014.

Steve O. Taylor (GHF) / Portrait of village shopkeeper outside building, rural Chad, 2002-2003.

Steve O. Taylor (GHF) / Boy looking out of window, son of village shopkeeper. Chad, 2002-2003.

Paul Hobson / Small tortoiseshell butterfly (Aglais urticae) on stain glass window of church, Sheffield, England, UK. Commended in the Other Animals Category of the GDT competition 2014.

Loic Poidevin / View of altar inside of a chapel, Santorini / Thira Island, Greece, May 2009.

Loic Poidevin / Windows and shutters, Santorini / Thira Island, Greece, May 2009.

Loic Poidevin / Windows and blue shutters, Santorini / Thira Island, Greece, May 2009.

Bryan and Cherry Alexander / An old, snow covered wooden accommodation building in Sabetta, South Tambey Gas field, Yamal, Siberia, Russia. February 2014.

Bryan and Cherry Alexander / An old, snow covered wooden accommodation building in Sabetta, South Tambey Gas field, Yamal, Siberia, Russia. February 2014.

Ernie Janes / Potting shed window with flower pots, hand forks, string and trowel on sill.

Ernie Janes / View through potting shed window with hand forks, string and trowel on sill.

Orsolya Haarberg / Reflection of Geirangerfjorden and Sunnylvsfjorden in a window of a mountain hut at Blomberg (452m). More og Romsdal, Norway. May 2012

Sam Hobson / Peregrine falcon (Falco peregrinus), adult in flight in front of building and scaffolding. Bristol, UK. May.

Kerstin Hinze / Fat / Edible dormouse (Glis glis) jumping in front of an old window, captive

Kerstin Hinze / Fat / Edible dormouse (Glis glis) on an old window, captive

Kerstin Hinze / Fat /Edible dormouse (Glis glis) on an old window, captive

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow, London, UK. December 2013.

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow London UK

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow, London, UK. December 2013.

David Tipling / Roost of around 800 Pied Wagtails (Motacilla alba) in trees outside Terminal 5 Heathrow, London, UK. December 2013.

Sergey Gorshkov / Polar bear (Ursus maritimus) outside window of building, Wrangel Island, Far Eastern Russia, September.