Know Before You Go

© 

Bison Facts | Yellowstone Wildlife Guide

STORY OF SURVIVAL

The story of the Yellowstone Bison, one of America’s most majestic animals, covers more than a hundred years of struggle and conflict. In the early 1800s, an estimated 65 million bison roamed throughout the Great Plains of North America. Compare that to the “Great Migration” of the Serengeti—by any standard an overwhelming spectacle—where the combined total of wildebeest and zebra in that migration is somewhere less than 2 million animals. Old accounts of the bison describe herds that took days to pass by.

Unfortunately, market hunting, poaching and an intentional campaign to eliminate a resource that Native American communities relied on had a disastrous effect on bison populations. Less than 1,000 bison remained by 1890. Even after the creation of Yellowstone National Park, bison remained unprotected until 1886, when the U.S. Army arrived to guard the park’s resources.

Through protective measures and management, bison numbers increased in Yellowstone, reaching a population of 1,500 in 1954. In 1968, bison were no longer strategically transplanted into different areas of the park, and the population was allowed to fluctuate according to environmental conditions such as the availability of food resources and winter weather conditions. The cool, wet summers and mild winters that occurred during the 1970s and ’80s led to another boost in population size, as grasses were plentiful and the winter mortality rate dropped.

PHYSICAL TRAITS & BREEDING

Bison (often referred to as buffalo) are truly majestic animals. An adult bull may grow to measure 6 feet tall at the shoulder and weigh 2,000 pounds. Females resemble the males, except that they are smaller and have more slender horns.

Bison breed between July and early August, and calves are born from April to May. In spring and early summer, newborns can often be seen in the Lamar Valley and Firehole area. Although observing and photographing the young can be a thrilling experience, it is extremely important to keep a safe distance from the bison, which can charge at speeds of 30 miles per hour. Visitors who venture too close risk being gored!
See Bison on These Yellowstone Adventures
Admin Note : Repeater Settings
Current Settings: trip
Edit Settings
Know Before You Go

Send Me Travel Emails

Get the Inside Scoop on the

World of Nature Travel

Our weekly eNewsletters highlights new adventures, exclusive offers, webinars, nature news, travel ideas, photography tips and more. Sign up today!

Natural Habitat Adventures Logo WWF Logo
Send Me Travel Emails
Text Messaging Policy Message and data rates may apply. You can unsubscribe from SMS at any time by texting STOP. Reply HELP for help. 2-4 promotional msgs/month. Informational msg frequency varies.
Privacy Policy
Thank you for joining our email list

Look for a special welcome message in your inbox, arriving shortly! Be sure to add naturalhabitat@nathab.com to your email contacts so you don’t miss out on future emails.

Get Weekly Updates

Our weekly eNewsletter highlights new adventures, exclusive offers, webinars, nature news, travel ideas, photography tips and more.

Privacy Policy
We're Proud of the Reputation We’ve Earned
Voted "World's Best Travel Company" by Outside Magazine
Travel & Leisure logo
Voted "Top Tour Operator" in Travel + Leisure World's Best Awards
Newsweek logo
Voted "Best Adventure Travel Company" in Newsweek Reader's Choice Awards
VIEW MORE AWARDS

View Our 2025/2026 Digital Catalog

Discover the World's Best

Nature Travel Experiences

Nathab 2024 Catalog

Together, Natural Habitat Adventures and World Wildlife Fund have teamed up to arrange nearly 100 nature travel experiences around the planet, while helping to protect the magnificent places we visit and their wild inhabitants.

Natural Habitat Adventures and World Wildlife Logos
Request Your 2025/26 Catalog
Text Messaging Policy Message and data rates may apply. You can unsubscribe from SMS at any time by texting STOP. Reply HELP for help. 2-4 promotional msgs/month. Informational msg frequency varies.
Continued - Page 2 of 2
To help us customize your catalog request, please tell us more about your travel needs:
Thank you for requesting a catalog
We’ve received your request. If you have any questions about our trips, please feel free to contact an Adventure Specialist today by calling 800-543-8917.

Get Weekly Updatess

Discover the World's Best

Nature Travel Experiences

Our weekly eNewsletter highlights new adventures, exclusive offers, webinars, nature news, travel ideas, photography tips and more. Sign up today!

Natural Habitat Adventures Logo WWF Logo
Send Me Travel Emails
Text Messaging Policy Message and data rates may apply. You can unsubscribe from SMS at any time by texting STOP. Reply HELP for help. 2-4 promotional msgs/month. Informational msg frequency varies.
Privacy Policy
Thank you for joining our email list!

Look for a special welcome message in your inbox, arriving shortly! Be sure to add naturalhabitat@nathab.com to your email contacts so you don’t miss out on future emails.

Send Us a Message

Send Us a Message

Have a question or comment? Use the form to the right to get in touch with us.

Natural Habitat Adventures Logo WWF Logo
Send Us a Message
Text Messaging Policy Message and data rates may apply. You can unsubscribe from SMS at any time by texting STOP. Reply HELP for help. 2-4 promotional msgs/month. Informational msg frequency varies.
Text Messaging Policy Message and data rates may apply. You can unsubscribe from SMS at any time by texting STOP. Reply HELP for help. 2-4 promotional msgs/month. Informational msg frequency varies.
Thank you for your message

We’ll be in touch soon with a response.

Refer a Friend

Refer a Friend,
Get $250 Off
Earn rewards for referring your friends! We'd like to thank our loyal travelers for spreading the word. Share your friend's address so we can send a catalog, and if your friend takes a trip as a first-time Nat Hab traveler, you'll receive a $250 Nat Hab credit you can use toward a future trip or the purchase of Nat Hab gear. To refer a friend, just complete the form below or call us at 800-543-8917. It's that easy! See rules and fine print here.
Natural Habitat Adventures Logo WWF Logo
Refer a Friend

Earn rewards for referring your friends! We'd like to thank our loyal travelers for spreading the word. Share your friend's address so we can send a catalog, and if your friend takes a trip as a first-time Nat Hab traveler, you'll receive a $250 Nat Hab credit you can use toward a future trip or the purchase of Nat Hab gear. To refer a friend, just complete the form below or call us at 800-543-8917. It's that easy! See rules and fine print here.

Text Messaging Policy Message and data rates may apply. You can unsubscribe from SMS at any time by texting STOP. Reply HELP for help. 2-4 promotional msgs/month. Informational msg frequency varies.
Thank you for the referral!

We've received your friend's information.

View Our 2025/2026 Digital Catalog

View Our 2025/2026

Digital Catalog

Help us save paper! We offer a digital version of The World's Greatest Nature Journeys. If you'd prefer a mailed copy, please provide your contact details here. To view our digital catalog, please enter your info in the form to the right.
Natural Habitat Adventures Logo WWF Logo
View Digital Catalog
Text Messaging Policy Message and data rates may apply. You can unsubscribe from SMS at any time by texting STOP. Reply HELP for help. 2-4 promotional msgs/month. Informational msg frequency varies.
Happy browsing!

Thanks for requesting access to our digital catalog. Click here to view it now. You’ll also receive it by email momentarily.

Our Trips

Polar Bear Tours

Polar Bear Tours

African Safaris

African Safaris

Galapagos Tours

Galapagos Tours

Alaska Adventures

Alaska Adventures

U.S. National Parks Tours

U.S. National Parks Tours

Canada & the North

Canada & the North

Europe Adventures

Europe Adventures

Mexico & Central America Tours

Mexico & Central America Tours

South America Adventures

South America Adventures

Asia & Pacific Adventures

Asia & Pacific Adventures

Antarctica & Arctic Journeys

Antarctica & Arctic Journeys

Photography Expeditions

Photography Expeditions

Adventure Cruises

Adventure Cruises

Women's Adventures

Women's Adventures

Family Adventures

Family Adventures

New Adventures

New Adventures

Questions? Call 800-543-8917

Contact Us

Have a question or comment?
Click any of the buttons below to get in touch with us.

Hours
Mountain Time

  • 8 am to 5 pm, Monday - Friday
  • 8 am to 3 pm on Saturday
  • Closed on Sunday
Call 800-543-8917
Questions? Click to Chat
Questions? Click to Chat
/know-before-you-go/us-national-parks/yellowstone/wildlife-guide/bison/