Horses gallop towards the corrals at dawn at Chico Basin Ranch, Colorado. The entire herd is wrangled every morning for ranch hands to catch their mount for the day.
Local ranchers of southeastern Colorado get their ropes ready during a branding. Brandings are a traditional spring event for cattle raisers in which the year's new calves are branded with the owner's unique mark.
Chakra and Raksha, two wolves rescued by the Colorado Wolf Center in Divide, Colorado, share a kiss in their enclosure. While wild wolves are highly social animals, they will also frequently fight and kill each other, so animals at the Wolf Center are carefully matched for strong relationships.
Skip of Charlo, Montana, a former employee of U.S. Fish and Wildlife, inherited his father's dairy farm when his father retired. Although he chose not to continue the family business, Skip sold the land to Fish and Wildlife, and now their home is surrounded by protected Wildlife Refuge.
Elisa Barba exercises her horse Palomino with the rest of her escaramuza team. The team of eight women performs routines with their horses in local rodeos.
Bison leave the corrals in a cloud of dust during the annual roundup and processing of the Medano-Zapata Ranch herd.
Aspiring luchador Estrella Occidentale trains at the gym with his coach for an upcoming match. Guadalajara, Mexico.
A young charro practices rope tricks at the stables after practice while the escaramuzas untack their horses. Mexican men and women both perform in Mexican rodeos but are relegated to different events based on their gender.
Doors to the inner sanctuary of Rongwo Gompa, a 14th century monastery in Amdo, Tibet.
Cattle graze in pasture alongside the highway in South Dakota.
Valentina Carrillo, 15, stands for photographs with various members of her extended family after her quincenera Mass in Guadalajara, Mexico.
Two ranchers sit horseback in the corrals at the end of a long day of pregnancy testing cattle at Chico Basin Ranch, Colorado.
A prairie dog pokes his head from his burrow on the eastern Colorado plains. Many ranchers poison prairie dogs because of a belief that the rodents degrade rangelands.
Two escaramuzas rest their horses while their coach marks out new lines for the next practice drill.
Duke Phillips III, a third-generation cattle rancher, now manages a herd of wild bison for the Nature Conservancy.
Sandhill crane specimen from 1914 at the Denver Museum of Nature & Science. Specimens for museum collections were historically collected by hunting expeditions.
An escaramuza canters her horse around the arena during practice. A well-executed routine requires each women to synchronize with both her horse and her teammates.
Dr. Bonney Macdonald, a professor of literature at West Texas A&M University, sits astride her horse Guapo during her annual Western literature workshop at the Zapata Ranch, Colorado.
Sandhill crane in flight over Ouray National Wildlife Refuge during the fall migration.