Laurie Campbell / Timber harvesting machine felling and processing conifers, Inverness-shire, Scotland, August 2007

Nick Upton / Adult Eurasian beaver (Castor fiber) at night, chewing bark from a Willow tree (Salix), Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.

Nick Upton / Male Eurasian beaver (Castor fiber) at night, standing up to chew bark from a Willow tree (Salix), Devon Wildlife Trust's Devon Beaver Project, Devon, UK, April.

SCOTLAND: The Big Picture / Tree with signs of Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, site of Scottish Beaver Trial, Argyll, Scotland, UK, June.

SCOTLAND: The Big Picture / Tree felled by Eurasian beaver (Castor fiber) feeding activity, Knapdale Forest, site of Scottish Beaver Trial, Argyll, Scotland, UK, June.

Cyril Ruoso / Man standing next to large rainforest tree with chainsaw before felling it, South East Cameroon, August 2008.

Mark Hamblin / 2020VISION / Woodland manager felling a pine tree to create fallen dead wood habitat for wildlife, Abernethy Forest RSPB Reserve, Cairngorms National Park, Scotland, UK, September.

Sven Zacek / Tree trunks that have been gnawed by Beavers (Castor fiber) in preparation for winter felling, Southern Estonia, November.

Sven Zacek / Beaver (Castor fiber) felled trees, to make dams. Southern Estonia, October.

Richard Du Toit / African Elephant (Loxodonta africana) feeding on sapling tree, Limpopo Province, South Africa

Wild Wonders of Europe / Widstra / European Beech trees (Fagus silvatica) tree trunks logged inside the forest, North Velebit National Park, Velebit Nature Park, Rewilding Europe area, Velebit mountains, Croatia

Mark Hamblin / 2020VISION / RSPB staff felling pine trees in plantation to create open habitat in woodland, RSPB Abernethy Forest Reserve, Cairngorms National Park, Scotland, UK September 2011, model released