Dave Bevan / Slow motion clip of a Jay (Garrulus glandarius) feeding from a peanut string during a snowstorm, Carmarthenshire, Wales, UK, November.

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) tossing away the husk from hazelnut, Cairngorms National Park, Highlands, Scotland, UK, November.

Suzi Eszterhas / Hyacinth macaw (Anadorhynchus hyacinthinus) eating palm nut. Pantanal, Brazil.

Suzi Eszterhas / Hyacinth Macaw (Anodorhynchus hyacinthinus) pair fighting, Pantanal, Brazil.Sequence 3 of 4

Ben Cranke / Hyacinth Macaw (Anodorhynchus hyacinthinus) group grooming and feeding on palm nuts, Piaui, Brazil. July.

Ben Cranke / Black-striped capuchin (Sapajus libidinosus) using rock as a tool to break open palm nut, Parnaiba Headwaters National Park, Piaui, Brazil. August.

Ben Cranke / Black-striped capuchin (Sapajus libidinosus) using rock as a tool to break open palm nut Parnaiba Headwaters National Park, Piaui, Brazil. July.

Ben Cranke / Black-striped capuchin (Sapajus libidinosus) using rock as a tool to break open palm nut, Parnaiba Headwaters National Park, Piaui, Brazil. July.

Cyril Ruoso / Chimpanzee (Pan troglodytes) using tools to crack nuts, Gabon

Cyril Ruoso / Chimpanzee (Pan troglodytes) using tools to crack nuts, Gabon

Juergen Freund / Seeds and flower from large tropical almond, sea almond, beach almond (Terminalia catappa) against black sand, Sulawesi beach, Indonesia