Andres M. Dominguez / Hawfinch (Coccothraustes coccothraustes) perched on branch amongst Hawthorn (Crataegus sp) berries. Sierra de Grazalema Natural Park, Cadiz, Spain. February.

Oscar Dewhurst / Red deer (Cervus elaphus) stag roaring, silhouetted under trees at sunrise. Bushy Park, London, UK. September

Ingo Arndt / Aerial shot over a forest of Southern beech trees (Nothofagus) in autumn, Torres del Paine National Park, Patagonia, Chile, April, 2018.

Jack Dykinga / Morning light with autumn coloured Cottonwoods (Populus sp) trees lining the river. Valley of the Gods, Colorado Plateau, of the Great Basin Desert, Utah, USA, November 2018.

Jack Dykinga / Rainbow over Long Canyon with fall coloured Cottonwood (Populus) trees against canyon walls, Burr Trail, Grand Staircase-Escalante National Monument, Utah, USA, October 2018.

Jack Dykinga / Waterfall over sandstone with cottonwood tree, Long Canyon , Burr Trail, Grand Staircase-Escalante National Monument, Utah, USA. October.

Nick Hawkins / Atlantic salmon (Salmon salar) under river ice. Quebec, Canada. October.

Marie Read / Wood Ducks (Aix sponsa), females behave aggressively toward a male (second from right) that is trying to join them on a floating log, autumn, New York, USA, October.

Marie Read / Blue jay (Cyanocitta cristata) holding an acorn in its bill whilst perched on tree stump, with autumn foliage, New York, USA, October.

TJ Rich / Wirehaired daschund, Staffordshire bull terrier and Hungarian viszla in autumn colours, Wiltshire, UK

Jeff Foott / Cottonwood (Populus sp) trees in autumn, Grand Staircase-Escalante National Monument, Utah

Jeff Foott / Mountains and river after autumn snowfall, Sunwapta River, Jasper National Park, Alberta, Canada

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

Jeff Foott / Waterfall after autumn snowfall, Tangle Creek Falls, Jasper National Park, Alberta, Canada

Jeff Foott / Waterfall after autumn snowfall, Tangle Creek Falls, Jasper National Park, Alberta, Canada

Jeff Foott / Fremont Cottonwood (Populus fremontii) trees in autumn, Bentonite Hills, Capitol Reef National Park, Utah

Sven Zacek / Bog surrounding river in morning light. Emajoe Suursoo Nature Reserve, Tartumaa, Estonia. October 2015.

Sven Zacek / Flooded meanders of Halliste River, aerial view. Soomaa National Park, Parnumaa, Western Estonia. October 2017.

Chase Dekker / Moose (Alces alces shirasi) bull flehming in autumn, Grand Teton National Park, Wyoming

Chase Dekker / Moose (Alces alces shirasi) bull flehming in autumn, Grand Teton National Park, Wyoming

Erlend Haarberg / Red squirrel (Sciurus vulgaris) hiding in a tree trunk, Klaebu, Norway, September.

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...

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

David Allemand / Birch tree (Betula sp) next to waterfall, Iceland. Runner-Up in the Plants category of the International OasisPhotoContest 2018

Guy Edwardes / View of hikers from behind the Pericnik Waterfall, Slovenia, October 2018.

Guy Edwardes / Waterfall in Fjaorargljufur canyon, Kirkjubaejarklaustur, Iceland, August 2017.

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

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

Guy Edwardes / Scarletina bolete (Boletus luridiformis) toadstool, New Forest National Park, Hampshire, England, UK. September.

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

Guy Edwardes / Buachaille Etive Mor, Rannoch Moor, Highlands, Scotland, UK. September 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 tree (Fagus sylvatica) showing roots, Peerdsbos, Brasschaat, Belgium

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

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

Danny Green / Brown bear (Ursus arctos) in autumnal forest, Finland, September

Danny Green / Brown bear (Ursus arctos) in autumnal forest, Finland, September

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

Pal Hermansen / Aerial shot of trees casting long shadows in low winter sunlight, Golsfjell, Buskerund, Norway, January 2018.

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

Staffan Widstrand / Wild Wonders of China / Red panda or Lesser panda (Ailurus fulgens) in the humid montane mixed forest, Laba He National Nature Reserve, Sichuan, China

Theo Bosboom / Underwater view of bubbles in the mountain stream. La Hoegne, Belgian Ardennes/High Fenn near Hockai, Belgium

Theo Bosboom / Autum leaves and grass in the current of mountain stream La Hoegne, Belgium.

Theo Bosboom / Underwater view of bubbles in water and trees on land, La Hoegne mountain stream, Belgium.

Theo Bosboom / Maple leaf in autumn, viewed from underwater with bubbles and foam of mountain stream, La Hoegne, Ardennes, Belgium.

Theo Bosboom / Autumn foliage including Beech and Oak leaves and Rowan berries floating in the current of a mountain stream, La Hoegne, Ardennes, Belgium.

Theo Bosboom / Underwater view of autumn leaves in stream current, La Hoegne, Ardennes, Belgium.

Theo Bosboom / Underwater view of bubbles and Beech (Fagus sylvatica) leaves Hoegne, Belgium.

Theo Bosboom / Autumn leaves stuck behind branches in the water, Leuvenumse beek, the Netherlands.

Theo Bosboom / Autumn leaves from Beech trees, Oak trees and Birch trees floating under water in the current of a mountain stream, La Hoegne, Ardennes, Belgium.

Theo Bosboom / Underwater view of autumn leaves stuck behind a fallen tree, Leuvenumse beek, the Netherlands.

Theo Bosboom / Autumn leaves seen underwater, Ardennes, La Hoegne, Belgium.

Theo Bosboom / Autumn leaves from Beech, Oak and Birch trees floating on water, taken from underwater, Ardennes, La Hoegne, Belgium.

Theo Bosboom / Oak and Beech tree leaves in autumn colours floating on water of mountain stream, La Hoegne / High Fenn, Ardennes, Belgium

Theo Bosboom / A pile of autumn Beech leaves caught behind a rock in a mountain stream La Helle, Ardennes, Belgium.

Theo Bosboom / Yellow coloured Birch leaf (Betula) floating on the bubbles and foam of a stream, De Veluwe (Leuvenumse bos), Netherlands.

Theo Bosboom / Split level view of autumn leaves underwater and tree reflections on the water surface, Levenumse beek, the Netherlands, November.

Theo Bosboom / Autumn leaves in a mountain stream (La Hoegne) in the Belgian Ardennes, Belgium.

Jeff Foott / Trees in fall near Calf Creek Falls, Grand Staircase-Escalante National Monument, Utah

Ross Hoddinott / Misty morning view of Exmoor countryside from Winsford Hill, Exmoor National Park, Somerset, UK. October 2016.

Ross Hoddinott / Kelly Hall Tarn, late evening light, The Lake District, Cumbria, UK. October 2016.

Ross Hoddinott / Catbells and the edge of Derwentwater bathed in early morning light and autumnal colours, Latrigg, Keswick, The Lake District, Cumbria, UK. November 2016.

Jack Dykinga / Fremont cottonwood trees (Populus fremontii) with autumnal leaves, Coyote Gulch,Grand Staircase-Escalante National Monument, Utah, USA.

Jack Dykinga / Cottonwood (Populus fremontii) trees in autumn at sunset, forming a sinuous line of yellow trees. Deer Creek Canyon, Grand Staircase-Escalante National Monument, Utah, USA, October.

Jack Dykinga / Cottonwood (Populus fremontii) trees forming a sinuous line of yellow trees at sunset, in Deer Creek Canyon, Grand Staircase-Escalante National Monument, Utah, USA

Philippe Clement / Panning shot of row of beech trees in autumn forest, Heidebos, Wachtebeke, Belgium, November

SCOTLAND: The Big Picture / Atlantic salmon (Salmo salar) leaping up a small waterfall in order to reach breeding grounds further upstream, Cairngorms National Park, Scotland, UK, October.

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) in mid leap, the Cairngorms National Park, Highlands, Scotland, UK, November.

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) tossing away the husk from hazelnut, Cairngorms National Park, Highlands, Scotland, UK, November.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) climbing tree trunk with autumn leaves, Highlands, Scotland, October 2015.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) on forest floor with autumn leaves Highlands, Scotland, UK, October.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) silhouetted against autumnal woodland, Highlands, Scotland, UK, October. Winner of the Seasons Category of the British Wildlife Photography Awards (BWPA) competition 20...

Jack Dykinga / Fallen Quaking aspen (Populus tremuloides) leaves on wood, autumn, Dixie National Forest, Utah, USA, October.

Sandra Bartocha / European beech (Fagus sylvatica) and Pines, Schweingartensee, Serrahn, Muritz-National Park, World Natural Heritage site, Germany, Europe. November 2015.

Sandra Bartocha / European beech tree (Fagus sylvatica). in woodland, Serrahn, Muritz-National Park, World Natural Heritage site, Germany, Europe. October 2015.

Sandra Bartocha / European beech (Fagus sylvatica) and Pines reflected in Schweingartensee lake.Serrahn, Muritz-National Park, World Natural Heritage site, Germany, Europe. November 2015.

Danny Green / Coastal brown bear (Ursus arctos) fishing, Lake Clarke National Park, Alaska, September

Mark Hamblin / Red Squirrel (Sciurus vulgaris) leaping onto log, Scotland, UK, September. Highly commended in the Habitat category of the BWPA (British Wildlife Photography Awards) 2016.

Andy Sands / Amethyst Deceiver (Laccaria amethystina) two young toadstools growing up from mossy log, Buckinghamshire, England, UK, September

Sumio Harada / Lake in fall, Bowman Lake, Glacier National Park, Montana

Ann & Steve Toon / Atlantic salmon (Salmo salar) leaping on upstream migration, River Tyne, Hexham, Northumberland, UK, November

Matthew Maran / Landscape of London at dawn with fog from Hampstead Heath, London, England, UK. November 2014.

Yva Momatiuk & John Eastcott / Fall colors in mountain meadow, Rocky Mountains, Colorado

Yva Momatiuk & John Eastcott / Quaking Aspen (Populus tremuloides) trees in autumn, Rocky Mountains, Colorado

Yva Momatiuk & John Eastcott / Quaking Aspen (Populus tremuloides) trees in autumn, Rocky Mountains, Colorado

Yva Momatiuk & John Eastcott / Quaking Aspen (Populus tremuloides) trees in autumn, Utah