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

Diane McAllister / Cosmos (Cosmos bipinnatus), Bachelor buttons / Cornflowers (Centaurea cyanus), and Common poppies (Papaver rhoeas) in a small meadow. Nevada, USA, July

Kristel Richard / Feral domestic horses (Equus caballus) wild herd stallion (grey) fighting a bachelor chestnut stallion, Blue Swallow Reserve, near Kaapsehoop, Mpumalanga province / Eastern Transvaal, South Africa, O...

Carol Walker / Wild Horses / Mustangs, two young bachelor stallions playing, McCullough Peaks Herd Area, Cody, Wyoming, USA

John Cancalosi / Bachelor herd of Fallow deer {Dama dama} UK.

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) bachelor stallions running together in winter, Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) young bachelor stallions sniffing each other, Pryor Mountain Wild Horse Range, Montana

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) bachelor palomino stallion prancing along ridge on summer range, Pryor Mountain Wild Horse Range, Montana

Tui De Roy / Atlantic Walrus (Odobenus rosmarus rosmarus) bachelor bulls on ice floe, North Coast Spitsbergen, Svalbard, Norwegian Arctic

Karine Aigner / Park ranger Niki Lake poses as 'Batty the Clown' alongside her friend 'Ellie the Moth' in San Antonio where a bachelor colony of Mexican free-tailed bats (Tadarida brasiliensis) live under the bridge....