Jack Dykinga / Douglas firs (Pseudotsuga menziesii) in 'Wall Street' Canyon. Bryce Canyon National Park, Utah, USA, October.

Ann & Steve Toon / Wildflowers, including poppies (Papaver rhoeas), corn marigold (Glebionis segetum), cornflowers (Centaurea cyanus) and corn chamomile (Anthemis arvensis), being grown for seed by Landlife, Fir Tree Fa...

Ammonite / Close-up shot panning up a swarm of Honey bees (Apis mellifera) hanging from a fir tree, France, April.

John Cancalosi / White-tailed Deer (Odocoileus virginianus) sniffing spruce cone. New York, USA, January.

Jack Dykinga / Charred remains of Aspen-fir forest near Hannagan's Meadow, at sunset with fireweeds growing in profusion amidst felled trees, Apache-Sitgreaves National Forest, Arizona, USA September 2011

Andy Rouse / Blue Tit (Cyanistes caeruleus) perched on snow covered Fir tree (Abies) branch, in a garden, Wales, UK December

Andy Rouse / Blue Tit (Cyanistes caeruleus) perched on snow covered Fir tree (Abies) branch, in a garden, Wales, UK December

Andy Rouse / Blue Tit (Cyanistes caeruleus) perched on snow covered Fir tree (Abies) branch, in a garden, Wales, UK December

David Noton / Morraine Lake, in the Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

David Noton / Morraine Lake, in the Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

David Noton / The Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

David Noton / The Valley of the Ten Peaks, after recent snowfall, Banff National Park, Alberta, Canada. October 2009

Andrew Walmsley / Male House sparrow (Passer domesticus) peched on a fallen Fir tree in heavy rain, Christchurch, New Zealand, March

George Sanker / Black bear (Ursus americanus) cub, cinnamon phase, climbing fir tree, Yellowstone National Park, Wyoming, USA, June

George Sanker / Young Black bear (Ursus americanus) cub climbing mature fir tree, Yellowstone National Park, Wyoming, USA, May

Jouan & Rius / European Silver firs (Abies alba / pectinata) on Hauts Fourneaux, Ballon des Vosges Nature Park, Vosges, Lorraine, France, January 2009

Wild Wonders of Europe / Biancarelli / Corkova Uvala, virgin forest with Silver fir (Abies alba) Spruce (Picea abies) and European beeches (Fagus sylvatica) in autumn, Plitvice Lakes National Park, Croatia, October 2008

Wild Wonders of Europe / Biancarelli / Autumn in Corkova Uvala, virgin mixed forest of Silver fir (Abies alba) European beech (Fagus sylvatica) and Spruce (Picea excelsa) trees, Plitvice Lakes National Park, Croatia, October 2008

Wild Wonders of Europe / Biancarelli / Autumn in Corkova Uvala, virgin mixed forest of Silver fir (Abies alba) European beech (Fagus sylvatica) and Spruce (Picea abies) trees, Plitvice Lakes National Park, Croatia, October 2008

Wild Wonders of Europe / Biancarelli / Soft focus on mixed woodland with Silver fir (Abies alba) Spruce (Picea excelsa) and European beeches (Fagus sylvatica) close to Ljeskovac village, Plitvice Lakes NP, Croatia, October 2008

Wild Wonders of Europe / Biancarelli / Abstract Autumn in Corkova Uvala, virgin mixed forest of Silver fir (Abies alba) European beech (Fagus sylvatica) and Spruce (Picea abies) trees, Plitvice Lakes National Park, Croatia, October 2008

Wild Wonders of Europe / Schandy / Mist drifting over a Nordmann fir (Abies nordmanniana) forest, near Dombay, Teberdinsky biosphere reserve, Caucasus, Russia, July 2008

Wild Wonders of Europe / Schandy / Nordmann fir (Abies nordmanniana) trees in fog, near Dombay, Teberdinsky biosphere reserve, Caucasus, Russia, July 2008

Wild Wonders of Europe / Schandy / Fallen Nordmann fir (Abies nordmanniana) tree, old-growth forest, Arkhyz valley, western part of the Teberdinsky Biosphere reserve, Caucasus, Russia, July 2008

Wild Wonders of Europe / Schandy / Park ranger, Ramazan Khubiev, on horseback in an old Nordmann fir (Abies nordmanniana) forest, Arkhyz valley, western section of the Teberdinsky Biosphere reserve, Caucasus, Russia, July 2008 (Model...

Wild Wonders of Europe / Schandy / Mist drifting over a Nordmann fir (Abies nordmanniana) forest, near Dombay, Teberdinsky biosphere reserve, Caucasus, Russia, July 2008

Claudio Contreras / Jeffrey pine (Pinus jeffreyi) and White Fir (Abies concolor) forest. Sierra de San Pedro Martir National Park, Baja California Peninsula, Mexico.

Tony Wu / Siberian flying squirrel (Pteromys volans orii) feeding on Sakhalin fir tree. Hokkaido, Japan. March.

Jack Dykinga / Long Canyon on the historic Burr Trail, with Douglas fir (Pseudotsuga menziesii) against the 'varnished' canyon walls. Grand Staircase-Escalante National Monument, Utah, USA. October 2018.

Jack Dykinga / Long Canyon on the historic Burr Trail, with Douglas fir (Pseudotsuga menziesii) against the 'varnished' canyon walls with sheets of water flowing over the sandstone. Grand Staircase-Escalante...

Marie Read / White-winged Crossbill (Loxia leucoptera), male feeding on Douglas-fir cones, Ithaca, New York, USA, January.

Markus Varesvuo / Common crossbill (Loxia curvirostra) juvenile male( left) and Parrot crossbill (Loxia pytyopsittacus) in Fir tree. Helsinki, Finland. December.

Markus Varesvuo / Parrot crossbill (Loxia pytyopsittacus) perched in Fir tree, snow in beak. Helsinki, Finland. December.

Markus Varesvuo / Coal tit (Periparus ater) feeding amongst Douglas fir (Pseudotsuga sp) cones. Helsinki, Finland. December.

Nick Upton / Lisaku Park Forest from above, a mix of mature Fir (Abies sp) trees, Birch (Betula sp) and Eurasian aspen (Populus tremula). Forest host to Siberian flying squirrel (Pteromys volans). Estonia, April 2...

Nick Upton / Lisaku Park Forest from above, a mix of mature Fir (Abies sp) trees, Birch (Betula sp) and Eurasian aspen (Populus tremula). Forest host to Siberian flying squirrel (Pteromys volans). Estonia, April 2...

Kirkendall-Spring / Forest in the Carbon River Valley of Mount Rainier National Park, Washington, USA, June.

Kirkendall-Spring / Large trees along the Twin Firs Trail in the Nisqually River Valley of Mount Rainier National Park, USA, June.

Jack Dykinga / Rays of low sunlight through Douglas fir (Pseudotsuga menziesii) trees in early morning fog, Redwood State and National Parks, California, USA. May.

Jack Dykinga / Rays of low sunlight through Douglas fir (Pseudotsuga menziesii) trees in early morning fog, Redwood State and National Parks, California, USA. May.

Jack Dykinga / Rays of low sunlight through Douglas fir (Pseudotsuga menziesii) trees in early morning fog, Redwood State and National Parks, California, USA. May.

Staffan Widstrand / Wild Wonders of China / Chinese fir (Cunninghamia lanceolata) Tangjiahe National Nature Reserve, Qingchuan County, Sichuan province, China

Staffan Widstrand / Wild Wonders of China / Chinese fir (Cunninghamia lanceolata) Tangjiahe National Nature Reserve, Qingchuan County, Sichuan province, China

Staffan Widstrand / Wild Wonders of China / Chinese fir (Cunninghamia lanceolata) with a dry deciduous leaf which has landed on its branch, Tangjiahe National Nature Reserve, Qingchuan County, Sichuan province, China

Staffan Widstrand / Wild Wonders of China / New leaf shoots of Chinese fir (Cunninghamia lanceolata) Tongbiguan Nature Reserve, Dehong Prefecture, Yunnan province, China, May.

Staffan Widstrand / Wild Wonders of China / New leaf shootsof Chinese fir (Cunninghamia lanceolata) Tongbiguan Nature Reserve, Dehong prefecture, Yunnan Province, China, May.

Felis Images / East Himalayan fir (Abies spectabilis) cones on tree, Bhutan.

Felis Images / Cones of East Himalayan fir (Abies spectabilis) Sikkim, India.

Ashley Cooper / Fire danger sign next to forest that has been burnt, Tule river area of the Sequoia National Forest, east of Porterville, California, USA. At this time California was suffering an exceptional drought,...

Dave Bevan / Common raven (Corvus corax) fledglings about to leave nest in fir tree, Carmarthenshire, Wales, UK, May.

Matthew Maran / Douglas fir (Pseudotsuga menziesii) planted with protective sleeve to prevent browsing, Devon, England, UK, July.

Fabrice Cahez / Track through fir forest in autumn, Vosges mountain, France, October.

George Sanker / American red squirrel (Tamiasciurus hudsonicus) feeding in fir tree. Acadia National Park, Maine, USA. May.

Sandra Bartocha / Spruce forest (Abies sp) Tiveden NP, Sweden

Phil Savoie / American red squirrel (Tamiasciurus hudsonicus) collecting, Douglas Fir (Pseudotsuga menziesii) cones, Montana, USA.

Phil Savoie / American red squirrel (Tamiasciurus hudsonicus) feeding on Douglas Fir (Pseudotsuga menziesii) cones, Montana, USA.

Phil Savoie / American red squirrel (Tamiasciurus hudsonicus) feeding on Douglas Fir (Pseudotsuga menziesii) seeds in cone, Montana, USA.

Philippe Clement / Blue Cloak Colorado white-fir (Abies concolor), native to western North America, April

George Sanker / American Red Squirrel (Tamiasciurus hudsonicus). Feeding in fir tree. Acadia National Park, Maine, USA.

Angelo Gandolfi / Silver fir trees (Abies alba), Sila National Park, Calabria, Italy, June 2013.

Angelo Gandolfi / Silver Fir (Abies alba) tree in mixed wood, June Sila National Park, Calabria, Italy, June 2013.

Angelo Gandolfi / Silver fir tree (Abies alba) cones, Sila National Park, Calabria, Italy. June.

Angelo Gandolfi / Cones of Silver fir (Abies alba) on tree, Sila National Park, Calabria, Italy, June.

Stephen Dalton / Douglas fir (Pseudotsuga menziesii) Rookery Wood, Sussex, England, UK, March.

Dave Bevan / Male Great spotted woodpecker (Dendrocopos major) in a fir tree, Carmarthenshire, Wales, UK, November.

Ann & Steve Toon / Wildflowers, including corn marigold (Glebionis segetum), cornflowers (Centaurea cyanus) and corn chamomile (Anthemis arvensis), being grown for seed by Landlife, Fir Tree Farm, Merseyside, UK, June.

Ann & Steve Toon / Wildflowers, including poppies (Papaver rhoeas), corn marigold (Glebionis segetum), cornflowers (Centaurea cyanus) and corn chamomile (Anthemis arvensis), being grown for seed by Landlife, Fir Tree Fa...

Ann & Steve Toon / Wildflowers, including poppies (Papaver rhoeas), corn marigold (Glebionis segetum), cornflowers (Centaurea cyanus) and corn chamomile (Anthemis arvensis), being grown for seed by Landlife, Fir Tree Fa...

Ann & Steve Toon / Wildflowers, including poppies (Papaver rhoeas), corn marigold (Glebionis segetum), cornflowers (Centaurea cyanus) and corn chamomile (Anthemis arvensis), being grown for seed by Landlife, Fir Tree Fa...

Mike Read / European silver fir (Abies alba) female flowers, Haut Plateau Reserve, Vercors Regional Natural Park, Vercors, France, June 2016.

Pascal Tordeux / Col du Bonhomme in snow, Vosges Mountains Alsace, France, February 2016.

Pascal Tordeux / Fir trees (Abies sp) Col du bonhomme, Vosges, Alsace, France, February 2016.

Roger Powell / Sulphur-crested cockatoo (Cacatua galerita) looking down from a fir tree, Halls Gap, Victoria, Australia.

Ernie Janes / Blue spruce (Picea pungens) close up of cones, cultivated plant.

Nick Upton / Developing and mature open cone of Turkish pine (Pinus brutia), Kilada, Argolis, Peloponnese, Greece, August 2013.

Nick Upton / Mature, open cone of Turkish pine (Pinus brutia), Kilada, Argolis, Peloponnese, Greece, August 2013.

Nick Upton / Developing cone of Turkish pine (Pinus brutia), Kilada, Argolis, Peloponnese, Greece, August 2013.

Jeff Foott / Quaking Aspen (Populus tremuloides) and fir tree in fall, Grand Staircase-Escalante National Monument, Utah

Andres M. Dominguez / Spanish fir tree (Abies pinsapo) covered in snow, Sierra de Grazalema Natural Park, southern Spain, November.

Andres M. Dominguez / Spanish fir (Abies pinsapo) in snow, Sierra de Grazalema Natural Park, southern Spain, November.

Andres M. Dominguez / Spanish fir trees (Abies pinsapo) covered in snow, Sierra de Grazalema Natural Park, southern Spain, November 2008.

Andres M. Dominguez / Spanish fir trees (Abies pinsapo) covered in snow, Sierra de Grazalema Natural Park, southern Spain, November 2008.

Gerrit Vyn / Lodgepole pine cones (Pinus contorta), Teton County, Wyoming, USA. May.

Vladimir Medvedev / Yeddo spruce (Picea jezoensis) flower cones, Amur Region, Russia.

Vladimir Medvedev / Yeddo spruce (Picea jezoensis) flower cones, Amur Region, Russia.

Paul Williams / Eastern spruce budworm (Choristoneura fumiferana) 6th instar larva feeding on fir needles, Quebec, Canada, July.

Paul Williams / Eastern spruce budworm (Choristoneura fumiferana) 6th instar larva abseiling on silk thread, Quebec, Canada, July.

Paul Williams / Eastern spruce budworm (Choristoneura fumiferana) 6th instar larva abseiling on silk thread, Quebec, Canada, July.

Krista Schlyer / Longleaf pine cone (Pinus palustris) in forest, northern Florida, USA. March.

Krista Schlyer / Longleaf pine cone (Pinus palustris) Green Swamp Preserve, North Carolina, USA, May 2014.

Krista Schlyer / Pine woods tree frog (Hyla femoralis), Longleaf pine forest, Florida, USA. March.

Chris Mattison / Cone of Korean Fir tree (Abies koreana) cultivated specimen.

Chris Mattison / Cone of Korean Fir tree (Abies koreana) cultivated specimen.

Chris Mattison / Snow plant (Sarcodes sanguinea) parasitic plant which grows in conifer forests. Sierra Nevada, California, USA, June..

Ben Cranke / Snow covered fir trees with tree tops killed by fumes from geysers, Yellowstone National Park, January 2011.

Fabrice Cahez / Fallen fir tree, Vosges, France, February.