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The Diamond A Ranch also known as The Big Boquillas is a large historic cattle ranch in Northern Arizona. In the early 1900’s the ranch was known as the Three V’s. Overtime the ranch was bought and sold by several large entities and later became known as the Diamond A.  In 1982 Harvey Dietrich and then partner Richard Rudnick took on the challenge of operating the ranch. In the mid 1990’s Harvey Dietrich bought out Richard Rudnick and the ranch has been operated by Cholla Livestock ever since. The Diamond A lays North of I-40 in the town of Seligman and stretches 75 miles north to the southern rim of the Grand Canyon covering 750,000 acres in Yavapai and Coconino counties all under one boundary fence.  The ranch has an extensive cattle operation running 6,000 head of mother cows, 450 bulls and when the grass allows a seasonal herd of steers are grazed on the ranch. The Diamond A prides itself on producing high quality cattle to be marketed as natural beef to consumers across the country.  

There are 10 full time camp cowboys employed by the ranch and additional cowboys are taken on for the spring and fall wagons. The wagon cowboys move from camp to camp on the ranch living out of their bedrolls and teepees and doing all of the cow work on the ranch horseback. It is an absolute necessity for this ranch to have good horse flesh or the work would not be able to get done. The size of the pastures of the ranch and their remote locations demand the use of horses that are both athletic and tough enough to be able to withstand the rigors of a typical day of work. A remuda of 120 head of versatile saddle horses are used for a wide variety of jobs across the ranch. These horses are used to brand calves, gather cattle, sorting cattle in the corrals as well as outside in a herd, check fence, gather horses, halter break weanling foals, doctor cattle and cover a whole lot of miles through all different kinds of country.  These horses are hearty and live almost their whole lives out in pastures making a living off of grass only. 

The Diamond A currently runs 30 broodmares to produce future using horses for the ranch operations. These mares are mostly raised right here on the ranch with a few good outside mares added to the mix on occasion. The mares and their foals are ran outside in large pastures and left to themselves to be horses until weaning time. The blood lines of the ranch are mostly from cow and ranch horse stock and include Tanquery Gin, Doc O’Lena, Colonel Freckles, Peppy San Badger, Hancock, Bueno Chex, Driftwood, Zan Parr Bar, PlayGun, Easy Jet, Peptoboonsmal, and Doc Tom Tucker. 

The horses of the Diamond A are part of an old cowboy tradition that continues to live on throughout the southwest and the ranch plans to proceed into the future with dedication and love for the livestock, horses and lifestyle that we hold so dear.