Staffan Widstrand / Golden eagle (Aquila chrysaetos) perched in snow covered tree. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Grey-headed woodpecker (Picus canus) on tree trunk in falling snow. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight over snow. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

David Tipling / 2020VISION / Warden using chain saw to cut birch and clear it from area for heather regeneration, Minsmere RSPB Reserve, Sandlings heath, Suffolk, UK, February 2011, model released

Ian Coleman / Illustration of Grey reef shark (Carcharhinus amblyrhynchos), Carcharhinidae. Endangered / threatened species.

Ian Coleman / Illustration of Basking shark (Cetorhinus maximus) feeding. Endangered / threatened species.

Ian Coleman / Illustration of Common thresher shark (Alopias vulpinus), Alopiidae. Endangered / threatened species.

Ian Coleman / Illustration of Great white shark (Carcharodon carcharias), Lamnidae. Endangered / threatened species.

Ian Lockwood / Purple-Faced Langur (Trachypithecus vetulus) in a suburban evergreen forest environment. Endemic, Sri Lanka, Endangered species

Ian McCarthy / Cracks in winter ice, Bathurst Island, Nunavut, Canada

Ian McCarthy / Bearded vulture {Gypaetus barbatus} soaring over the Himalayas, northern India

Ian McCarthy / Silhouette of mastiff dog crossing a bridge with Himalayas in the background, Upper Dolpo, Nepal

Ian McCarthy / European river otter {Lutra lutra} male on coast, Shetland Islands, Scotland, UK

Ian McCarthy / Wandering albatross {Diomedea exulans} in a snow flurry, South Georgia

Ian McCarthy / King penguin {Atenodytes patagonicus} diving through water, South Georgia

Ian McCarthy / Common raven {Corvus corax} landing on snow, Bryce Canyon NP, Utah, USA

Ian McCarthy / European river otter {Lutra lutra} male in water, Shetland Islands, Scotland, UK

Ian McCarthy / King penguin {Atenodytes patagonicus} in the surf, South Georgia

Ian McCarthy / Wandering albatross {Diomedea exulans} flying over open ocean, South Atlantic

Ian McCarthy / Southern royal albatross {Diomedea epomophora} in flight over sea, South Atlantic

Mark Brownlow / Rebreather instructor Ian Thomas and cameraman Didier Noirot prepare to dive under the ice, Lake Baikal, world's deepest and oldest (and largest by volume) freshwater lake, Siberia, Russia. BBC Plane...

Ian Lockwood / Munnar town overshadowed by Anaj-Mudi, S India's highest mountain, Western Ghats, Kerala.

Ian McCarthy / King penguin chicks in creche {Aptenodytes patagoni} Marion Island, sub-antarctica (Taken on location for BBC Planet Earth Shallow Seas 2005).

IAN REDMOND / Forest Elephants with trunks raised among Giant Lobelia. Rwanda Parc National des Volcans

Ian Lockwood / Sunrise at the Palani Hills, Tamil Nadu, India.

Ian Lockwood / Shola forest at Pillar Rocks shunted montane tropical rainforest, Western Ghats, Palni Hills, Tamil Nadu India

IAN REDMOND / Mountain gorilla female + young {Gorilla g beringei} Mgahinga NP, Uganda, East Africa Kaboko

Ben Osborne / Ian McCarthy in Antarctica filming Blue-eyed cormorants for BBC television series 'Life in the Freezer'

IAN REDMOND / Year-old chimp begs for monkey meat from adult male. Tanzania Mahale Mountains {Pan troglodytes}

Staffan Widstrand / Great spotted woodpecker (Dendrocopos major) male on snowy tree trunk. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Snow covered Scots pine (Pinus sylvestris) trees in boreal forest. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight, close-up. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Eagle watching hide with forest beyond, snow covered. Ecotourism site ,Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Grey-headed woodpecker (Picus canus) on lichen and snow covered tree trunk. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Grey-headed woodpecker (Picus canus) on tree trunk. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight, snow covered forest in background. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Staffan Widstrand / Golden eagle (Aquila chrysaetos) in flight, talons outstretched, close-up. Kalvtrask, Vasterbotten, Lapland, Sweden. January.

Ashley Cooper / Polar bear (Ursus maritimus) starved to death as a consequence of climate change. Svalbard, Norway, July 2013

Ashley Cooper / Polar bear (Ursus maritimus) starved to death as a consequence of climate change. Svalbard, Norway, July 2013

Ashley Cooper / Polar bear (Ursus maritimus) starved to death as a consequence of climate change. Svalbard, Norway, July 2013

Tim Laman / Cameraman Eric Liner and sound man Ian Fein at work in the tropical rainforest, Arfak Mountains, West Papua, New Guinea.

Tim Laman / Eric Liner and Ian Fein hiking through the misty montane forest of the Arfak Mountains, New Guinea. September 2009.

Tim Laman / Ian Fein climbing a rope into the forest canopy in the lowland rainforest near Oransbari. West Papua, Indonesia.

Tim Laman / Eric Liner and Ian Fein interview ornithologist Edwin Scholes at the edge of the river in the lowland forest near Oransbari, West Papua, New Guinea.

Tim Laman / Eric Liner and Ian Fein, filming along a river in the Oransbari area, Irian Jaya, West Papua. August 2009.

Tim Laman / Ian Fein makes a river crossing on the way to the Oransbari Camp, West Papua.

Nick Turner / Landscape painter Ian Shearman painting landscape on Selsley Common, Stroud, Gloucestershire, UK. September 2015.

Nick Turner / Landscape painter Ian Shearman painting landscape on Selsley Common, Stroud, Gloucestershire, UK. September 2015.

Nick Upton / Dr. Ian Grange of Royal Agricultural University numbering a nest box on a post erected for Tree Sparrows (Passer montanus) as part of the Marlborough Downs Nature Improvement Area project, Temple Farm...

Staffan Widstrand / Ian Player, former chief warden of iMfolozi National Park, South Africa

Staffan Widstrand / Ian Player, former chief warden of iMfolozi National Park, South Africa

Terry Whittaker / Ian Parker and John Young, volunteers for the Kent Wildlife Trust 'Water Vole Recovery Project' (Arvicola amphibius) conducting American mink (Neovison vison) survey using floating raft. North Kent Ma...

Nick Upton / Clare Stalford of the Wildwood Trust removing wire mesh from the entrance hole of a nest box containing a pair of Hazel dormice (Muscardinus avellanarius), held by Ian White, Dormouse officer for the...

Nick Upton / Ian White, Dormouse officer for the People's Trust for Endangered species holding a Hazel dormouse (Muscardinus avellanarius), Nottinghamshire, UK, June. Model released.

Nick Upton / Ian White and Nida Al-Fulaij of the People's Trust for Endangered species and Lorna Griffiths of Nottinghamshire Wildlife Trust planning where to place nestboxes containing Hazel dormice (Muscardinus...

Nick Upton / Hazel dormouse (Muscardinus avellanarius) held in the hand of Ian White, Dormouse officer for the People's Trust for Endangered species, Nottinghamshire, UK, June. Model released.

John Abbott / Metalmark butterfly (Brenthia sp.) a mimic of jumpingiders, Ian Anderson's Caves Branch Lodge, Cayo District, Belize.

Ian McCarthy / Photographer Ian McCarthy with camera waiting to photograph walruses, Ellesmere Island, Nunavut, Canada.

Ian McCarthy / Long tailed duck (Clangula hyemalis) Ellesmere Island, Nunavut, Canada.

Ian McCarthy / Atlantic salmon (Salmo salar) leaping up Cassley Falls, Scotland, UK

Ian McCarthy / Photographer Ian McCarthy with camera, Ellesmere Island, Nunavut, Canada.

Ian McCarthy / Stoat / Ermine (Mustela erminea) in summer coat standing on hind legs by ice, Ellesmere Island, Arctic, Canada

Ian McCarthy / Atlantic salmon (Salmo salar) leaping up Cassley Falls, Scotland, UK

Nick Upton / Ian Chambers and Gill Brown of Backwell Environment Trust returning a torpid Common / Hazel dormouse (Muscardinus avellanarius) to its nestbox after weighing it during a survey in coppiced woodland ne...

Nick Upton / Ian Chambers of Backwell Enviroment Trust lowering a nestbox containing a Common / Hazel dormouse (Muscardinus avellanarius) into a plastic sack held by Gill Brown, before taking measurements, in copp...

Nick Upton / Ian Chambers of Backwell Enviroment Trust holding Adult Common / Hazel dormouse (Muscardinus avellanarius) inside a plastic sack as Gill Brown inspects closely to sex it during a survey in coppiced wo...

MYN / Ian Butler / Red Admiral (Vanessa atalanta)wings open, Great Malvern, Worcestershire, September. meetyourneighbours.net project

MYN / Ian Butler / Red Admiral (Vanessa atalanta) on leaf, Great Malvern, Worcestershire, September. meetyourneighbours.net project

MYN / Ian Butler / Red Admiral (Vanessa atalanta) profile with wings closed, Great Malvern, Worcestershire, September. meetyourneighbours.net project

MYN / Ian Butler / Red Admiral (Vanessa atalanta) profile with wings closed, Great Malvern, Worcestershire, September. meetyourneighbours.net project

MYN / Ian Butler / Red Admiral (Vanessa atalanta) on leaf, , Great Malvern, Worcestershire, September. meetyourneighbours.net project

Rick Tomlinson / Ian Percy and Ben Ainslie on "Team Origin 1851", Audi Med Cup, Cascais, Portugal, May 2010.

Rick Tomlinson / "Green Dragon" skipper Ian Walker during in-port race training in Alicante, Spain, for the 10th Volvo Ocean Race 2008-2009. For EDITORIAL USE only.

Rick Tomlinson / The "Green Dragon" team, skippered by Ian Walker from Great Britain, lined up infront of their yacht before the start of the 10th Volvo Ocean Race 2008-2009, Alicante, Spain. For EDITORIAL USE only.

Rick Tomlinson / "Green Dragon" Navigator Ian Moore during in-port race training in Alicante, Spain, for the 10th Volvo Ocean Race 2008-2009. For EDITORIAL USE only.

Rick Tomlinson / "Green Dragon" Navigator Ian Moore during in-port race training in Alicante, Spain, for the 10th Volvo Ocean Race 2008-2009. For EDITORIAL USE only.

Rick Tomlinson / Skipper Ian walker (GBR) with trophy after finishing fourth in "Green Dragon" on leg one of the 10th Volvo Ocean Race into Cape Town, November 2008. For EDITORIAL USE only.

Rick Tomlinson / Skipper Ian walker (GBR) with trophy after finishing fourth in "Green Dragon" on leg one of the 10th Volvo Ocean Race into Cape Town, November 2008. For EDITORIAL USE only.

Rick Tomlinson / Ian Percy and Ben Ainslie on "Team Origin 1851", Audi Med Cup, Cascais, Portugal, May 2010.

Rick Tomlinson / "Green Dragon" skipper Ian Walker during in-port race training in Alicante, Spain, for the 10th Volvo Ocean Race 2008-2009. For EDITORIAL USE only.

Rick Tomlinson / RS400 Gull Grand Prix at Gurnard Sailing Club, 7/8th May. Racing in Thorness Bay close to Gurnard Isle of Wight. Alistair McBriddle and Ian Gibb 1347

Rick Tomlinson / RS400 Gull Grand Prix at Gurnard Sailing Club, 7/8th May. Racing in Thorness Bay close to Gurnard Isle of Wight. Alistair McBriddle and Ian Gibb 1347

Ian Lockwood / Checkered Keelback snake (Xenochrophis piscator) India

Ian Lockwood / Purple-faced langur (Trachypithecus vetulus) in a suburban evergreen forest environment. Endangered species, Sri Lanka

Ian Lockwood / Sri Lanka Green Pit Viper (Trimeresurus trigonocephalus) Sinharaja rainforest, Sri Lanka

Ian Lockwood / Sri Lanka Green Pit Viper (Trimeresurus trigonocephalus) Sinharaja rainforest, Sri Lanka

Ian Lockwood / Large Scaled Pit Viper (Trimeresurus macrolepis) in a shola forest at an altitude of 2000 meters, endemic, Western Ghats, India

Ian Lockwood / Sri Lanka pipe snake (Cylindrophis maculatus) Sri Lanka, endemic

Ian Lockwood / Sri Lanka Junglefowl (Gallus lafayetii) Sinharaja forest reserve, Sri Lanka

Ian Lockwood / Sri Lanaka blue magpie (Urocissa ornata) endemic, Sinharaja forest reserve, Sri Lanka, vulnerable species.

Ian Lockwood / Sri Lanaka blue magpie (Urocissa ornata) endemic, Sinharaja forest reserve, Sri Lanka, vulnerable species.

Ian Lockwood / Horsfield's Spiny Lizard (Salea horsfieldii) an endemic Agamid lizard that is restricted to a few southern hill ranges of India's Western Ghats. This one is found in the upper Palani HIlls at an altit...

Ian Lockwood / Muddy water flows through the Ravana Ella falls after a pre-monsoon deluge. It is an indicator of aggressive agricultural practices upstream. Sri Lanka, August 2010

Ian Lockwood / Bronzed frog (Rana temporalis) Endanagered species, wild, Gurukala Botanical Sanctuary, Kerala, India