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What Do Bison Eat?

Bison, also known as buffalo, are herbivores that primarily feed on grasses and other plants. Bison have a diverse diet and are known to feed on a variety of plant species, including both warm-season and cool-season grasses, as well as forbs and shrubs.

Grasses make up the majority of a bison's diet, with blue grama, buffalo grass, and big bluestem being some of the most common grasses consumed by bison. During the growing season, bison will graze on these grasses for up to 16 hours a day. During the winter months, when grasses are not readily available, bison will feed on shrubs, forbs, and other plant species that are more resistant to the cold and snow.


In addition to grasses and forbs, bison will also feed on shrubs, such as sagebrush and rabbitbrush, as well as woody plants, such as trees and shrubs. Bison have a strong jaw and sharp teeth that allow them to feed on tough, woody plants. They will also feed on a variety of flowers, leaves, and stems of different plants, depending on their availability.

Bison are known for their ability to adapt to different habitats and find food in a variety of environments, including grasslands, prairies, and forests. In areas where grasses are not readily available, bison will feed on whatever vegetation is available, including agricultural crops such as corn and alfalfa.


Bison are ruminants, which means they have a four-chambered stomach that allows them to extract maximum nutrition from the plants they consume. Bison have the ability to extract nutrients from tough and fibrous plants that other animals are unable to digest, which makes them well adapted to survive in harsh and unpredictable environments.

Bison are social animals that live in herds and have strong bonds between mothers and their young. Female bison, also known as cows, give birth to one or two calves each year, and the calves stay with their mother for about a year, until the next calf is born.


Bison cows feed their young by producing milk, which is rich in fat and protein, to support the growth and development of the calf. The calf will nurse from its mother for several months, gradually transitioning to solid food as it grows and matures.

Bison cows are known for their strong maternal instincts, and they are very protective of their young. When a calf is born, the cow will stay close to it, and will aggressively defend it from any perceived threat, including other animals and humans.


In the first few weeks of life, the calf will nurse frequently, and will gain weight rapidly, growing at an average rate of 2.2 pounds per day. The milk produced by the cow is high in fat, which allows the calf to grow quickly and store energy for later use.


As the calf grows, it will begin to eat solid food, such as grasses, in addition to nursing. The calf will also follow its mother as she forages for food, learning about different types of plants and how to forage for food. Bison calves are weaned from their mothers gradually, as they become more independent and are able to find food on their own. By the time the calf is a year old, it will have transitioned to a diet of mostly solid food and will be able to survive on its own.

Bison are majestic animals with a rich history and fascinating biology. Here are some fun facts about bison:

  1. Bison are the largest land mammals native to North America, with males weighing up to 2,200 pounds and standing up to six feet tall at the shoulder. This size and strength make bison a formidable presence in the wilderness.

  2. Bison have a shaggy mane of fur that covers their neck and chest, which helps to keep them warm in cold weather. This fur, along with a thick hide, helps bison to withstand harsh weather conditions and tough terrain.

  3. Bison have a hump of muscle on their shoulders, which provides them with power and endurance. This makes bison strong runners and good swimmers, allowing them to travel long distances and navigate challenging terrain.

  4. Bison have a short, curved horn on their forehead, which they use for defense, competition, and manipulating snow to access food in the winter. These horns are unique to each individual, and can be used to tell bison apart.

  5. Bison are social animals that live in herds, and have a hierarchical social structure, with dominant males and females leading the group. This social structure provides safety and stability for the herd, and helps them to work together to find food and protect their young.

  6. Bison have a lifespan of about 15 to 20 years in the wild, and up to 25 years in captivity. This lifespan is relatively short compared to some other large mammals, but bison are known for their resilience and adaptability in the face of adversity.

  7. Bison are known for their distinctive roar, which can be heard from up to a mile away. This roar is used to communicate with other members of their herd, and can be used to signal danger or to attract mates.

  8. Bison have been an important part of the cultural and spiritual traditions of many Native American tribes for thousands of years, and are considered a symbol of strength and resilience. This cultural significance has helped to protect bison from extinction, and has inspired efforts to conserve and restore bison populations.

In conclusion, bison are fascinating animals with unique physical features, social structures, and cultural significance. Whether you're admiring them from a distance, or getting up close, bison are sure to leave a lasting impression.


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