SCOTLAND: The Big Picture / Red Squirrel (Sciurus vulgaris) tossing away the husk from hazelnut, Cairngorms National Park, Highlands, Scotland, UK, November.

Tony Heald / Hanuman langur (Semnopithecus entellus) eating coconut husk, Bandhavgarh National Park, India. March.

Mark Moffett / Harvester Ant (Messor sp) returning to nest with a seed it has collected to husk and store, near Kerman, Iran

Ashley Cooper / Maize (Zea mays) husks that are used as a renewable fuel to burn on household stoves, northern China, March 2009.

Ashley Cooper / Maize husks that are used as a renewable fuel to burn on household stoves, northern China, March 2009.

Paul Bertner / Cicada husk, Gunung Leuser National Park, Sumatra, Indonesia

Philippe Clement / Fallen green husks / walnuts of the Eastern black walnut (Juglans nigra) tree on the forest floor, native to eastern North America, Belgium, November.

Cheryl-Samantha Owen / Parchment Coffee (Coffea arabica) beans drying on trays outside, after the beans have been pulped, fermented and washed. The outer husk (parchment) is removed at the coffee mills. Commercial farm, Tan...

Fiona Rogers / Celebes / Black crested macaque (Macaca nigra) juvenile feeding on coconut husk, Tangkoko National Park, Sulawesi, Indonesia.

Philippe Clement / Spiny husk splitting open and showing chestnuts of the Sweet chestnut tree / marron (Castanea sativa) on the forest floor, Belgium, October

Peter Lewis / Husk of Sweet Chestnut (Castanea sativa) with three edible nuts. UK, Europe, October.

Charlie Summers / Robber / Coconut Crab (Birgus latro) holding coconut with husk removed, Christmas Island, Australia, Indian Ocean, November. Sequence 2/3