We're working with you to make a positive impact around the world in more than 35 countries, all 50 United States and your backyard. Support our work
The Conservancy’s Dunn Ranch preserve, located in the heart of the Grand River Grasslands in northwest Missouri, is entering one of the most dramatic and exciting phases of prairie restoration: the reintroduction of bison onto the landscape. The bison’s presence on the prairie will restore ecological processes which are integral components of natural grassland communities.
1950s | Incorrect
1840s | Correct
Correct - the last known wild bison in Missouri was reportedly spotted in Camden County. Before they were hunted to near extinction in the late 1800s, bison roamed the Great Plains for nearly 10,000 years.
1890s | Incorrect
1780s | Incorrect
Grasses and sedges | Correct
Correct - Bison graze on dominant sedges and grasses and avoid broadleaf and flowering plants (called forbs); this results in a biologically rich prairie. In contrast, cattle primarily consume forbs, allowing sedges and grasses to grow unchecked.
Broadleaf plants | Incorrect
Tree leaves and bark | Incorrect
Prairie chickens | Incorrect
Wallowing | Correct
You're partially correct!
Roaming | Correct
You're partially correct!
Tree horning | Correct
You're partially correct!
All of the above | Correct
Correct - Grazed and trampled areas left by bison herds result in a diversity of structure on the prairie, creating habitat for a wide range of native birds, plants, insects, and other animals.
True | Correct
Correct - Bison were commonly interbred with cattle to create an animal that was larger than traditional beef cows and better able to tolerate harsh winters. The bison herd at Dunn Ranch will be genetically pure, having originated from Wind Cave National Park - one of only two founding herds that were not crossbred with cattle.
False | Incorrect
| Incorrect
| Incorrect
True | Correct
Correct - That's why the Conservancy is being extra cautious with the bison herd at Dunn Ranch, just like any cattle rancher would be with his or her cattle herd. All bison entering or leaving the Dunn Ranch bison herd will be tested for disease, and an annual roundup will be conducted to test and, if necessary, treat bison for any diseases or parasites. Calves at Dunn Ranch will be routinely vaccinated.
False | Incorrect
| Incorrect
| Incorrect
True | Correct
Correct - The Nature Conservancy supports local businesses by purchasing equipment and supplies locally and by hiring local contractors. Although the Conservancy is tax exempt, the organization voluntarily pays property taxes for the Dunn Ranch property annually. Additionally, the bison at Dunn Ranch will draw visitors who stay at local hotels and eat at nearby restaurants, and will provide engaging educational opportunities for school groups.
False | Incorrect
| Incorrect
| Incorrect
0 feet | Incorrect
3 feet | Incorrect
6 feet | Correct
Correct - Though massive, bison are surprisingly agile - they can jump 6 feet vertically and more than 7 feet horizontally.
9 feet | Incorrect
2 miles per hour | Incorrect
8 miles per hour | Incorrect
20 miles per hour | Incorrect
35 miles per hour | Correct
Correct - Bison are also strong swimmers!
8-10 years | Incorrect
18-22 years | Correct
Correct - Bison in the wild live about 18-22 years. In captivity, they can live to be as old as 30.
40-50 years | Incorrect
62-70 years | Incorrect
200-400 pounds | Incorrect
900-2,200 pounds | Correct
Correct - Males are usually larger than females. Bison may grow to 6.5 feet in height, and usually range in length from 10-12.5 feet.
2,400-3,000 pounds | Incorrect
Over 3,000 pounds | Incorrect
0-3 Correct: Bison novice - you still have a lot to learn! Get the basics.
4-7 Correct: Bison apprentice - not bad! Learn more with this video series featuring Dunn Ranch site manager Randy Arndt.
8-10 Correct: A true bison expert - well done! Now it's time to take action!
Bison are integral components of tallgrass prairie ecosystems and an important piece of Missouri's natural heritage. The reintroduction of bison at Dunn Ranch is the final link in restoring a fully functioning prairie ecosystem. Get the latest about the reintroduction!
Whether scary or exciting, nature has a way of sneaking up on you. See stories
Hear some of nature's success stories and see how nature matters to us all. Watch videos