SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) climbing down Scots pine tree, just tail visible. Cairngorms National Park, Highlands, Scotland. August.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) in summer coat on Scots pine tree trunk, Highlands, Scotland

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) testing nut. Cairngorms National Park, Highlands, Scotland, UK, November.

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) in winter, Cairngorms National Park, Highlands, Scotland, UK, December.

SCOTLAND: The Big Picture / Red squirrels (Sciurus vulgaris) feeding next to each other on old tree stump, Cairngorms National Park, Highlands, Scotland, UK, February.

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) leaping between tree stumps, Cairngorms National Park, Highlands, Scotland, UK. Sequence 1 of 3.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) in mature pine forest habitat, Cairngorms National Park, Highlands, Scotland, UK

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) leaping between tree stumps, Cairngorms National Park, Highlands, Scotland, UK. Sequence 2 of 3.

SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) leaping between tree stumps, Cairngorms National Park, Highlands, Scotland, UK. Sequence 3 of 3.

Ben Cranke / Eurasian red squirrel (Sciurus vulgaris) sitting on tree branch, Finland. February.

Erlend Haarberg / Red squirrel (Sciurus vulgaris) carrying nest material, Klaebu, Sor-Trondelag, Norway, May

Mark Hamblin / 2020VISION / Red squirrel (Sciurus vulgaris) drinking from woodland pool, Scotland, UK, November

Mark Hamblin / 2020VISION / Red squirrel (Sciurus vulgaris) at woodland pool, Scotland, UK, November

Mark Hamblin / 2020VISION / Red squirrel (Sciurus vulgaris) resting in pine tree in snow, Scotland, UK, November

Wild Wonders of Europe / Cairns / Red squirrel (Sciurus vulgaris) on branch in snow, Glenfeshie, Cairngorms National Park, Scotland, February 2009 WWE BOOK

Ann & Steve Toon / Norway spruce cones (Picea abies) showing one eaten by Red squirrel (Sciurus vulgaris), Kielder Forest, Northumberland, UK, October 2017

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) on branch in autumnal forest, Cairngorms National Park, Highlands, Scotland, UK, October

SCOTLAND: The Big Picture / Red squirrels (Sciurus vulgaris) three chasing each other round oak tree, Cairngorms National Park, Highlands, Scotland, UK, April.

SCOTLAND: The Big Picture / Red Squirrel (sciurus vulgaris) in winter hanging from trunk of Oak tree, Cairngorms National Park, Highlands, Scotland, UK, January.

Fabrice Cahez / Red squirrel (Sciurus vulgaris) running, Vosges, France

Mark Hamblin / Red squirrel (Sciurus vulgaris) in pine woodland habitat in snow, Scotland, UK, February.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) backlit on edge of woodland pool, Cairngorms National Park, Scotland, UK, May 2013.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) running along edge of woodland pool, Cairngorms National Park, Scotland, UK, May.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) on branch in pine forest, Inshriach, Glenfeshie, Cairngorms National Park, Scotland, UK, December.

SCOTLAND: The Big Picture / Red squirrel (Sciurus vulgaris) leaping with nut in mouth. Scotland, UK. Small repro only.

Terry Whittaker / Red squirrel (Sciurus vulgaris) up Scots pine (Pinus sylvestris) Black Isle, Scotland, UK. October

Edwin Giesbers / Red Squirrel (Sciurus vulgaris) in autumnal woodland leaflitter with toadstool, the Netherlands, November.

Danny Green / Red squirrel (Sciurus vulgaris) running in the snow, Finland, April

Peter Cairns / 2020VISION / Red squirrel (Sciurus vulgaris) running along scots pine tree, Scotland, March 2012.

Mark Hamblin / 2020VISION / Red squirrel (Sciurus vulgaris) on pine stump in snow, Scotland, UK, December

Laurent Geslin / Red squirrel (Sciurus vulgaris) foraging for buried nuts on woodland floor, autumn, France.