Our herd presently consists of 3000 bison of which 1,200 are breeding age females (cows).
Cows average 1,050 pounds and have an annual calf crop of over 90 percent. A male bison (bull) weighs in at around 1,800 to more than 2,000 pounds between ages 5 and 6. Cows are checked for pregnancy in November. Their calves are born in April and May, weighing about sixty pounds and normally weaned in November.
The excess animals not needed to maintain the breeding herd are used for meat or to grow other herds. Durham Ranch bison are very selectively sold to restaurants and supermarkets all over the world.