Nick Upton / Mixed wet woodland including Aspen (Populus tremula) and Downy birch (Betula pubescens). Inhabited by rare surviving Siberian flying squirrel (Pteromys volans) population. Near Lisaku, Estonia. April 2018.

Wild Wonders of Europe / Wothe / Beech (Fagus sp) forest with Bracket fungus (Fomes fomentarius) Morske Oko Reserve, Vihorlat Mountains, East Slovakia, Europe, June 2008

Jeff Foott / Birch Bracket (Piptoporus betulinus) mushroom on Paper Birch (Betula papyrifera) log, Acadia National Park, Maine

Robert Thompson / Polypore fungus (Ischnoderma resinosum) Tollymore Forest, County Down, Northern Ireland, UK, October

Adrian Davies / Oak mazegill fungus (Daedalea quercina) underside showing gills, Surrey, UK. April.

Philippe Clement / Red-belted bracket fungus (Fomitopsis pinicola) growing on fallen tree trunk in wood in autumn. Flanders, Belgium, October

Staffan Widstrand / Rose bracket (Fomitopsis rosea) fungus growing on damp bark in forest, Kaltisbacken Nature Reserve, Norrbotten, Sapmi, Lapland, Sweden. August.

Philippe Clement / Birch bracket fungus (Piptoporus betulinus) growing on fallen tree trunk in forest, Flanders, Belgium. November.

Adrian Davies / Chicken of the woods fungus (Laetiporus sulphureus) growing on tree trunk, Surrey, UK. May.

Ann & Steve Toon / Little owl (Athene noctua) perched on Birch bracket fungus (Piptoporus betulinus), Cumbria, UK. October. Controlled conditions.

Nick Upton / Birch bracket fungus (Piptoporus betulinus) growing on dead Silver birch (Betula pendula) tree, Kenfig NNR, Wales, UK, October.

Nick Upton / Birch bracket fungi (Piptoporus betulinus) growing on dead Silver birch (Betula pendula) tree, Kenfig NNR, Wales, UK, October.

Nick Upton / Velvet-top fungus (Phaeolus schweinitzii) growing on forest floor below coniferous trees with typical brown exudate visible, New Forest, Hampshire, UK, October.