Suzi Eszterhas / Golden Lion Tamarin (Leontopithecus rosalia), Atlantic Forest, Brazil

Suzi Eszterhas / Golden Lion Tamarin (Leontopithecus rosalia), Atlantic Forest, Brazil

Suzi Eszterhas / Golden Lion Tamarin (Leontopithecus rosalia), Atlantic Forest, Brazil

Phil Savoie / Smeathman's furrow bee (Lasioglossum smeathmanellum), feeding on wild alpine strawberry (Fragaria vesca), Monmouthshire, Wales, UK. December

Sven Zacek / Ural owl (Strix uralensis) perched in tree sleeping, viewed through a fence, Estonia.

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) mother nursing calf, Newfoundland, Canada

Mark Raycroft / Woodland Caribou (Rangifer tarandus caribou) male, Newfoundland, Canada

Ernie Janes / Beech trees (Fagus sylvatica) at night in winter, with lamp post illuminating the woodland. Felbrigg Woods, Norfolk, England, UK. January.

SCOTLAND: The Big Picture / RF - Sunrise over birch woodland, Cairngorms National Park, Scotland, UK.June (This image may be licensed either as rights managed or royalty free.)

SCOTLAND: The Big Picture / RF - Red Squirrel (Sciurus vulgaris), at woodland pond , Scotland, UK.April (This image may be licensed either as rights managed or royalty free.)

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris), at woodland pool, Cairngorms National Park, Scotland, UK.November

Shane P. White / Diamond Falls, Soufriere, Saint Lucia, Caribbean

Steven David Miller / Long-nosed potoroo (Potorous tridactylus) feeding on bird seed fallen from bird feeders which encourages them to come out into open woodland. Fences around the property protect them from feral predato...

TJ Rich / Black working cocker spaniel in bluebells, in beech woodland, Micheldever Woods, Hampshire, UK

Ernie Janes / Bluebells (Hyacinthoides non-scripta) and Beech (Fagus sylvatica) leaves, England, UK, May.

Jeff Foott / Mixed coniferous and deciduous forest after snowfall in autumn, Wells Gray Provincial Park, British Columbia, Canada

SCOTLAND: The Big Picture / Stream in spate in native oak woodland in summer, Clonaig, Kintyre, Argyll, Scotland, UK, July 2015.

Sven Zacek / White-tailed sea eagle (Haliaeetus albicilla) flying over frost and snow covered forest. Tartumaa, Southern Estonia. January 2011.

Sven Zacek / Frozen bog pool system, aerial view. Endla Nature Reserve, Jogevamaa, Central Estonia. December 2016.

Sven Zacek / Meandering Loobu River with surrounding meadows and woodlands, aerial view. Lahemaa National Park in Northern Estonia in Laane-Virumaa, Estonia. May 2017.

Guy Edwardes / Beech (Fagus sylvatica) woodland canopy in winter, Cranborne Chase, Dorset, England, UK.

Guy Edwardes / Beech (Fagus sylvatica) woodland canopy in winter, Cranborne Chase, Dorset, England, UK.

Nick Upton / Two Red fox (Vulpes vulpes) cubs playing near the entrance to their den at dusk, Somerset, England, UK, May.

Nick Upton / Tilt shot of a dam constructed by Eurasian beavers (Castor fiber) on a section of the River Otter, Devon, England, UK, June 2018.

Paul Souders/ Worldfoto / Forested hills in mist, Ngong Hills, Kenya

Konrad Wothe / Firefly (Lamprohiza splendidula) light tracks in forest, Bavaria, Germany

Thomas Marent / Splendid Poison Dart Frog (Dendrobates sylvaticus) in rainforest, Timbiqui, Colombia

Thomas Marent / Golden Poison Dart Frog (Phyllobates terribilis) in rainforest, Timbiqui, Colombia

SCOTLAND: The Big Picture / Pine marten (Martes martes) foraging in Pine (Pinus sp) woodland at night. Glenfeshie, Cairngorms National Park, Scotland, UK.

SCOTLAND: The Big Picture / Red fox (Vulpes vulpes) cub sitting in coniferous woodland clearing at dusk. Glenfeshie, Cairngorms National Park, Scotland, UK.

SCOTLAND: The Big Picture / Eurasian badger (Meles meles), two foraging in Pine (Pinus sp) woodland. Glenfeshie, Cairngorms National Park, Scotland, UK.

Brian Bevan / Male Green woodpecker (Picus viridis) feeding young at nest hole, shot looking up trunk, Bedfordshire, England, UK, June.

Brian Bevan / Juvenile Green woodpecker (Picus viridis) leaving nest hole, shot looking up trunk, Bedfordshire, England, UK, June.

Brian Bevan / Male Green woodpecker (Picus viridis) feeding young at nest hole, shot looking up trunk, Bedfordshire, England, UK, June.

Will Burrard-Lucas / Aerial view of Miombo woodland, Niassa Reserve, Mozambique. Photographed from a Bat Hawk light aircraft. November 2011.

Axel Gomille / Wolf (Canis lupus), cubs playing at edge of woodland, Saxony-Anhalt, Germany, July.

Andy Sands / Oxlips (Primula eliator) growing among Wood Anemones (Anemone nemorosa) good indicators of ancient woodland, Suffolk, England, UK, April

Bruno D'Amicis / Red fox (Vulpes vulpes) walking along fallen trunk of old Beech (Fagus sylvatica) tree, Coppo del Principe old-growth beech forest in autumn. Abruzzo, Lazio and Molise National Park / Parco Nazionale...

Bruno D'Amicis / Beech (Fagus sylvatica) tree seedlings in old growth forest in spring, Abruzzo, Lazio and Molise National Park / Parco Nazionale d'Abruzzo, Lazio e Molise UNESCO World Heritage Site Italy. May

Bruno D'Amicis / Beech (Fagus sylvatica) tree seedlings in old growth forest in spring, Abruzzo, Lazio and Molise National Park / Parco Nazionale d'Abruzzo, Lazio e Molise UNESCO World Heritage Site Italy. May

Philippe Clement / Two Lynx (Lynx lynx) kittens play fighting in front of den entrance, Bavarian Forest National Park, Germany, October. Captive.

Dave Bevan / Female Chaffinch (Fringilla coelebs) bringing moss to nest and incorporating it into nest before flying out of frame, Carmarthenshire, Wales, UK, May.

Dave Bevan / Female Chaffinch (Fringilla coelebs) shaping nest with her body and wings, Carmarthenshire, Wales, UK, May.

Guy Edwardes / Sgwd Ddwli Uchaf, Brecon Beacons National Park, Wales. June 2013

Ashley Cooper / Needle ice on Holly leaves (Ilex europaeus) in a woodland in Ambleside Cumbria UK. December 2008

Shane P. White / Forest in autumn near mountains, Mount Fitz Roy, Patagonia, Chile

Konrad Wothe / Pair of European nuthatches (Sitta europaea) mating, Bavaria, Germany, April.

Andrew Peacock / Minden / Taiga and snow-covered mountains in autumn, Glacier Bay National Park, Alaska

Sebastian Kennerknecht / Minden / South African Giraffe (Giraffa giraffa giraffa) female in Mopane (Colophospermum mopane) woodland, Kruger National Park, South Africa

Dave Bevan / Common raven (Corvus corax) flying to nest to feed fledglings, Carmarthenshire, Wales, UK, May.

Dave Bevan / Slow motion clip of two pairs of Jackdaws (Corvus monedula) squabbling over nest site, Worcestershire, England, UK, May.

Guy Edwardes / Golitha Falls, River Fowey, Bodmin Moor, Cornwall, England, UK. May 2010.

Guy Edwardes / River Fowey at Golitha Falls, Bodmin Moor, Cornwall, England, UK. May 2010.

Guy Edwardes / River Fowey flowing through Beech (Fagus sylvatica) woodland, Golitha Falls, Bodmin Moor, Cornwall, England, UK. May 2010.

Guy Edwardes / Bluebell (Hyacinthoides non-scripta) covered slope with Colmer's Hill in background, Eype Down, Bridport, Dorset, England, UK. May 2014.

Guy Edwardes / Bluebells (Hyacinthoides non-scripta) on Eype Down with Colmer's Hill in background, Bridport, Dorset, England, UK. May 2014.

Guy Edwardes / Abstract view of woodland canopy, Cranborne Chase, Ashmore, Dorset, England, UK. March 2016.

Guy Edwardes / Bonskeid House, traditional Scottish country house, Linn of Tummel, Pitlochry, Perthshire, Scotland, UK. October 2013.

Guy Edwardes / Canoes on Loch Tummel, Perthshire, Scotland, UK. October, 2014.

Guy Edwardes / Trees reflected in Loch Tummel, Perthshire, Scotland, UK. October, 2014.

Guy Edwardes / Boat hut on lochshore, Faskally Forest, Pitlochry, Perthshire, Scotland, UK. October 2014.

Guy Edwardes / River Braan at Black Linn Falls, The Hermitage, Dunkeld, Perthshire, Scotland, UK. October, 2013.

Guy Edwardes / Queen's View, Loch Tummel, Perthshire, Scotland, UK. October, 2014.

Guy Edwardes / River Garry and Pass of Killiecrankie from Garry Bridge, Perthshire, Scotland, UK. October, 2013.

Guy Edwardes / River Garry, Pass of Killiecrankie, Pitlochry, Perthshire, Scotland, UK. October, 2013.

Bernard Castelein / Beech woodland (Fagus sylvatica) Peerdsbos, Brasschaat, Belgium

Bernard Castelein / Beech woodland (Fagus sylvatica) with sun rays shining through, black and white image. Peerdsbos, Brasschaat, Belgium

Bernard Castelein / Beech woodland (Fagus sylvatica) Peerdsbos, Brasschaat, Belgium, November.

Steve Downer / Tracking shot of Bluebells (Hyacinthoides non-scripta) in flower, Millison's Wood, Solihull, West Midlands, UK May.

Andrew Peacock / Taiga and coastal snow-covered mountains in autumn, Glacier Bay National Park, Alaska

Chien Lee / Ocelot (Leopardus pardalis) male in cloud forest, Mashpi Amagusa Reserve, Pichincha, Ecuador

Chien Lee / Ecuadorian Toad-headed Pit-viper (Bothrocophias campbelli) in rainforest, Mashpi Amagusa Reserve, Pichincha, Ecuador

Chien Lee / Asian Brown Tortoise (Manouria emys) male in rainforest, Tawau Hills Park, Sabah, Malaysia

Michio Hoshino / Aurora borealis over forest, Alaska

Konrad Wothe / Creek with suspension bridge in rainforest, Baeza, northern Ecuador

Dave Bevan / Slow motion clip of a Tawny owl (Strix aluco) leaving nest site in hollow tree, Carmarthenshire, Wales, UK, April.

Chien Lee / White-lined Leaf Frog (Phyllomedusa vaillanti) in rainforest, Ecuador

Chien Lee / Red-headed Krait (Bungarus flaviceps) in rainforest, Santubong National Park, Sarawak, Borneo, Malaysia

Chien Lee / Travellers Palm (Ravenala madagascariensis) trees on hillside, Fianarantsoa Province, Madagascar

Chien Lee / Golden Mantella (Mantella aurantiaca) in forest, Andasibe, Madagascar

Paul Bertner / Rainforest at sunrise, Sani Lodge, Ecuador

Paul Bertner / Forest-covered hills and river, Taironaka Lodge, Colombia

Vincent Grafhorst / Stream in Harenna Forest, Bale Mountains National Park, Ethiopia

Vincent Grafhorst / Tree with epiphytes, Harenna Forest, Bale Mountains National Park, Ethiopia

Jeff Foott / Maple (Acer sp) leaves and needles in autumn, Acadia National Park, Maine

Jeff Foott / Deciduous forest and pond in autumn, Jordan Pond, Mount Desert Island, Acadia National Park, Maine

Jeff Foott / Deciduous forest in autumn, Acadia National Park, Maine

Jeff Foott / Deciduous forest in autumn, Acadia National Park, Maine

Jeff Foott / Creek in autumn, Duck Brook, Acadia National Park, Maine

Dave Bevan / Juvenile male Wild boar (Sus scrofa) fighting to establish seniority, Gloucestershire, England, UK, December.

Michael Hutchinson / Tracking shot of Wood anemones (Anemone nemorosa) flowering in woodland, Bristol, England, UK, April.

Michel Roggo / Autumn trees viewed from below Lake Baikal, Lake Baikal UNESCO World Heritage Site, Siberia, Russia. May 2013. Photographed for The Freshwater Project.

Luke Massey / Wild boar (Sus scrofa) piglets suckling from mother, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Wild boar (Sus scrofa) piglets resting, with mother nearby, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Low angle shot of Wild boar (Sus scrofa) piglets running towards parent, Forest of Dean, Gloucestershire, England, UK, May.

Luke Massey / Two Wild boar (Sus scrofa) feeding in woodland with piglets, Forest of Dean, Gloucestershire, England, UK, May.