Ann & Steve Toon / Cornfield annual summer wildflowers growing on one of the plant charity Landlife's National Wildflower Farms, St Helens, Merseyside, UK, June.

Paul Harcourt Davies / Cornflowers (Centaurea cyanus) and poppies (Papaver rhoeas) growing on fallow fields near Orvieto, Umbria, Italy. June 2010

Paul Harcourt Davies,Paul Harcourt Davies / Cornflowers (Centaurea cyanus) growing on fallow fields near Orvieto, Umbria, Italy, June. Taken with fisheye lens

Robert Thompson / Black bulgar fungus (Bulgaria inquinans) growing amongst mosses, Tollymore Forest, County Down, Northern Ireland, UK. September.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing from a rotting log in woodland, Gloucestershire, UK, October.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing from a rotting log in woodland, Gloucestershire, UK, October.

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Andy Sands / Black bulgar or Bachelor's Buttons (Bulgaria inquinans) a jelly fungus that grows on fallen Oak, Ash and other hardwood trees, Hertfordshire, Englkand, UK, September. Focus Stacked

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing on rotting oak log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Nick Upton / Black bulgar fungus (Bulgaria inquinans) growing on rotting oak log, GWT Lower Woods reserve, Gloucestershire, UK, October.

Christophe Courteau / Gelada Baboon (Theropithecus gelada) batchelor male eating grass, Simien NP, Ethiopia, 3000m altitude

Christophe Courteau / Gelada Baboon (Theropithecus gelada) batchelor male sitting on rock, Simien NP, Ethiopia, 3000m altitude

Christophe Courteau / Gelada Baboon (Theropithecus gelada) batchelor male grooming back leg, Simien NP, Ethiopia, 3000m altitude

Christophe Courteau / Gelada Baboon (Theropithecus gelada) group of batchelor males, Simien NP, Ethiopia, 3000m altitude

Christophe Courteau / Gelada Baboon (Theropithecus gelada) group of batchelor males seeking food, Simien NP, Ethiopia, 3000m altitude

Martin Willis / Short-eared Rock Wallaby (Petrogale brachyotis) eating leaf, Batchelor, Northern Territory, Australia

Martin Willis / Mertens' Water Monitor (Varanus mertensi) sunbathing, Batchelor, Northern Territory, Australia

Kristel Richard / Wild Przewalski (or Takhi) horse {Equus ferus przewalski} endangered species, batchelor stallion in landscape, Hustai National Park, Tuv Province, Mongolia, July 2007

Carol Walker / Wild horse / mustang, silhouette of batchelor stallion at sunrise, McCullough Peaks, Wyoming, USA

George McCarthy / Black bulgar / Batchelor's buttons fungus {Bulgaria inquinans} growing on bark of tree, UK

Duncan Mcewan / Batchelor's Buttons / Black Bulagar fungus (Bulgaria inquinans) on dead oak, Scotland

George McCarthy / Batchelor's buttons fungus / Black bulgar {Bulgaria inquinans} UK

Natasha Breed / Gelada baboon {Theropithecus gelada} batchelor males sleeping, Ethiopia

Axel Gomille / Poppies (Papaver rhoeas) and Cornflowers (Centaurea cyanus) in flower along edge of farmland, Mecklenburg-Western Pomerania, Germany. June.

Will Watson / Black bulgar (Bulgaria inquinans) on Sessile oak (Quercus petrea), Warren Wood, Herefordshire, England, November. Focus stacked.

Etienne Littlefair / Black-headed python (Aspidites melanocephalus), Batchelor, Northern Territory, Australia, October.

Etienne Littlefair / Black-palmed monitor (Varanus glebopalma), Batchelor, Northern Territory, Australia, November.

Etienne Littlefair / Marbled velvet gecko(Oedura marmorata), Batchelor, Northern Territory, Australia, October.

Etienne Littlefair / Darwin carpet python (Morelia spilota variegata), adult in monsoon vine thicket habitat, Batchelor, Northern Territory, Australia, November.

Etienne Littlefair / Olive python (Liasis olivaceus) a very large specimen moving down towards a creek to cool off on a hot night, flicking tongue. Batchelor, Northern Territory, Australia, November.

Etienne Littlefair / Freshwater crocodile (Crocodylus johnstoni) at rest, Batchelor, Northern Territory, Australia, July.

Guy Edwardes / Black bulgar fungus (Bulgaria inquinans). Dorset, England, UK. October.

Guy Edwardes / Black bulgar fungus (Bulgaria inquinans). Dorset, England, UK. October.

Linda Pitkin / Black bulgar fungus (Bulgaria inquinans). Selsdon Wood Nature Reserve, Surrey, England, UK. October.

Linda Pitkin / Bachelor's buttons fungus (Bulgaria inquinans), Abinger Roughs NT, Surrey, England, October