Carol Walker / Wild horse / Mustang, foal, portrait, Pryor mountains, Montana, USA

Carol Walker / Wild horses / Mustangs, two stallions play fighting, Pryor Mountains, Montana, USA, July 2010

Carol Walker / Mustang / wild horses, cremello colt foal Cremesso with grazing mare, McCullough Peak herd, Wyoming, USA, June 2007

Carol Walker / Mustang / wild horses, second year cremello colt Cremesso, reacting to black colt, McCullough Peak herd, Wyoming, USA, June 2009

Carol Walker / Mustang / wild horse, yearling cremello colt Claro in thick winter coat, stretching, McCullough Peak herd, Wyoming, USA, February 2008

Carol Walker / Mustang / wild horses, second year cremello colt Claro play fighting with bay, McCullough Peak herd, Wyoming, USA, July 2009

Carol Walker / Mustang / wild horses, two yearling cremello colts Claro and Cremesso playing with a bay, McCullough Peak herd, Wyoming, USA, June 2008

Carol Walker / Mustang / wild horse, cremello colt foal Cremesso interacting with yearling filly, McCullough Peak herd, Wyoming, USA, August 2007

Carol Walker / Claro and Cremesso, two third year male cremello Wild horse / mustang colts that had been rounded up from the McCullough Peak herd, Wyoming, and put up for adoption, on their new ranch in Colorado, US...

Carol Walker / Mustang / Wild horses, mare with foal Mica, Adobe Town herd, Wyoming, USA, October 2010, grey foal went on to be adopted by photographer

Carol Walker / Mustang / Wild horses, young horse running with foal Mica, Adobe Town herd, Wyoming, USA, October 2010, grey foal went on to be adopted by photographer

Carol Walker / Mustangs / wild horses, two cremello colts Claro and Cremosso interacting, mutual grooming, McCullough Peaks herd, Wyoming, USA, August 2007

Carol Walker / Wild Horses / mustangs, two stallions rearing up fighting, Pryor Mountains, Montana, USA, June

Carol Walker / Wild horse / mustang, mare rolling, Pryor Mountains, Montana, USA, July

Kristel Richard / Wild horse / mustang (Equus caballus) two young mustangs play-fighting in the Pryor Mountains, Wyoming, USA.

Jeff Vanuga / Cowboys working for the Bureau of Land Management round up wild horses / mustangs to remove them from public land, Red Desert, Wyoming, USA. Model released

Carol Walker / Wild Horses / Mustangs, sorrel stallion striking at another stallion, McCullough Peaks Herd Area, Cody, Wyoming, USA

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

Carol Walker / Mustangs / Wild horses running from helicopter at round-up, Sand Wash Herd Area, near Maybell, Colorado, USA

Carol Walker / Wild horses / Mustangs, band with dun filly drinking in waterhole, Pryor Mountains, Montana, USA

Carol Walker / Mustangs / Wild horses, stallion and mare trotting, Return to Freedom Sanctuary, Lompoc, California, USA

Carol Walker / Wild Horse / Mustang, pinto stallion running, McCullough Peaks Herd Area, Cody, Wyoming, USA

Carol Walker / Wild horses / Mustangs, palomino and red dun stallions rearing, Pryor Mountains, Montana, USA

Carol Walker / Wild horses / Mustangs, palomino and red dun stallions rearing, Pryor Mountains, Montana, USA

Shattil & Rozinski / Wild Horses / Mustangs (Equus caballus) in the Red Desert, Wyoming, USA

Carol Walker / Grulla Mustang stallion running in dust at Return to Freedom Sanctuary, Lompoc, California, USA

Carol Walker / Wild Horses / Mustangs, pinto foal and pinto yearling in winter, McCullough Peaks Herd Area, Cody, Wyoming, USA

Carol Walker / Mustangs / Wild horses, stallion running, Return to Freedom Sanctuary, Lompoc, California, USA

Carol Walker / Wild horses, mustangs, in Pryor Mountains, Montana, USA - two stallions face off, one rearing

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

Carol Walker / Mustang / Wild horse - mares + stallion in snow storm, Wyoming, USA. Adobe Town HMA

Carol Walker / Mustang / Wild horse filly chewing on young stallion's tail, Montana, USA. Pryor

Carol Walker / Mustang / wild horse filly portrait, Montana, USA. Pryor mountains HMA

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) group drinking from waterhole in summer, Montana

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) group drinking from water hole in summer, Montana

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) mare and her foal flee danger in cloud of dust in the summer season, Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) palomino yearling filly and her spring foal brother grooming each other, Pryor Mountain Wild Horse Range, Montana

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) harem stallions posturing as prelude to fight, Montana

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) stallion yawning in evening sunlight, Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) mare and foal silhouetted against evening sky during summer, Montana

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

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) family band grazing under evening sky, Pryor Mountain Wild Horse Range, Montana

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) pair of spring foals, Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) stallion yawning, Wyoming

Yva Momatiuk & John Eastcott / Mustang (Equus caballus) family band running together in desert, Fifteen Mile Herd Management Area, central Wyoming

Carol Walker / Claro, Cremosso and Mica, three wild horses / mustangs rounded up from the McCullough Peak herd and Adobe Town Herd in Wyoming, adopted by photographer Carol Walker. Running in their corral, Colorado,...

Carol Walker / Wild horses / mustangs. Mica (right), rounded up from Adobe Town Herd Management Area in Wyoming and Claro (left), rounded up from McCullough Peak herd. Both adopted by photographer Carol Walker. Colo...

Carol Walker / Photographer Carol Walker with her adopted wild horses / mustangs Claro, Cremosso and Mica, rounded up from the McCullough Peak herd and Adobe Town Herd in Wyoming. Resting in their corral, Colorado,...

Carol Walker / Photographer Carol Walker with her adopted wild horses / mustangs Claro, Cremosso and Mica, rounded up from the McCullough Peak herd and Adobe Town Herd in Wyoming. Resting in their corral, Colorado,...

Carol Walker / Photographer Carol Walker with her adopted wild horses / mustangs Claro, Cremosso and Mica, rounded up from the McCullough Peak herd and Adobe Town Herd in Wyoming. Resting in their corral, Colorado,...

Carol Walker / Wild horses / mustangs. Mica (right), rounded up from Adobe Town Herd Management Area in Wyoming and Cremosso (left), rounded up from McCullough Peak herd. Both adopted by photographer Carol Walker. M...

Carol Walker / Wild horses / mustangs. Mica (left), rounded up from Adobe Town Herd Management Area in Wyoming and Claro (right), rounded up from McCullough Peak herd. Both adopted by photographer Carol Walker. Meet...

Carol Walker / Wild Horse / Mustang, two stallions fighting, McCullough Peaks Herd Area, northern Wyoming, USA, August 2009

Carol Walker / Wild horse / Mustang, two young foals, Pryor Mountains, Montana, USA, June 2009

Carol Walker / Wild horses / Mustangs, group of pinto horses at water, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, mare grazing beside resting foal, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, pinto foal walking, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, males following female in oestrus, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, males sniffing female, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, pinto stallion, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, bay chasing and biting a pinto, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, juvenile grey, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, black stallion, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, horse cooling in water, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, black and pinto walking together, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, pinto horse, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, herd with foals, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, two mutual grooming, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, two pintos and a foal, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, mare and foal, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, two pintos, mutual grooming, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, herd passing resting cattle, McCullough Peaks, Wyoming, USA

Carol Walker / Wild horses / Mustangs, two resting, one standing one lying down, McCullough Peaks, Wyoming, USA

Carol Walker / Mustang / Wild Horse, one grey and two pinto horses, Sand wash basin herd, Colorado, USA

Carol Walker / Mustang / Wild Horse, grey stallion on track, Sand wash basin herd, Colorado, USA

Carol Walker / Mustang / Wild Horse, pinto foal, Sand wash basin herd, Colorado, USA

Carol Walker / Mustangs / Wild Horses, four horses standing on hillside, Adobe Town herd, Wyoming, USA

Carol Walker / Mustangs / Wild horses, two horses with Pronghorn antelope (Antilocapra americana) in the background, Adobe Town, Wyoming, USA

Carol Walker / Mustangs / Wild horses, herd on the move, Adobe Town, Wyoming, USA

Carol Walker / Wild horse / Mustang, gray, Adobe Town, Wyoming, USA

Carol Walker / Wild horse / Mustang, dun, Adobe Town, Wyoming, USA

Carol Walker / Wild horses / Mustangs, three gray horses, Adobe Town, Wyoming, USA

Carol Walker / Wild horse / Mustang, black stallion running, Great Divide Basin, Wyoming, USA

Carol Walker / Wild horses / Mustangs, herd running, Great Divide Basin, Wyoming, USA

Carol Walker / Mustangs / Wild Horses, herd running, Dreamcatcher Horse and Burro Sanctuary, California, USA

Carol Walker / Mustangs / Wild Horses, herd running, Adobe Town, Wyoming, USA

Carol Walker / Mustangs / Wild Horses being herded by helicopter of the Bureau of Land Managment, Adobe Town, Wyoming, USA, October 2010

Carol Walker / Mustangs / Wild Horses being herded by helicopter of the Bureau of Land Managment, Adobe Town, Wyoming, USA, October 2010

Carol Walker / Mustangs / Wild Horses being herded by helicopter of the Bureau of Land Managment, Adobe Town, Wyoming, USA, October 2010

Carol Walker / Wild horses / Mustangs, close up of mane tangled up with burrs and grass seeds, South Dakota, USA

Carol Walker / Wild horses / Mustangs, herd on the move, Wild Horse Sanctuary, South Dakota, USA

Carol Walker / Wild horses / Mustangs, herd on the move, Wild Horse Sanctuary, South Dakota, USA

Carol Walker / Wild horses / Mustangs, herd on the move, Wild Horse Sanctuary, South Dakota, USA, February 2012

Carol Walker / Wild horse / Mustang, grey stallion running, Adobe Town herd, Wyoming, USA