A calf in a herd of bison in the Lamar Valley in Yellowstone National Park, Wyoming, June 22, 2011. On average over 3,000 bison live in the park. REUTERS/Jim Urquhart (UNITED STATES) 

A herd of bison feed on grass in the snow in Lamar Valley, Yellowstone National Park, Wyoming, U.S., December 18, 2021. REUTERS/Go Nakamura 

A bison feeds on grass in the snow in Lamar Valley, Yellowstone National Park, Wyoming, U.S., December 15, 2021. REUTERS/Go Nakamura 

A herd of bisons feed on grass in the snow in Lamar Valley, Yellowstone National Park, Wyoming, U.S., December 15, 2021. REUTERS/Go Nakamura 

FILE PHOTO: A grizzly bear and her two cubs approach the carcass of a bison in Yellowstone National Park in Wyoming, United States, July 6, 2015. REUTERS/Jim Urquhart/File Photo 

Bisons are seen in a farm near Avenches, Switzerland April 27, 2018. REUTERS/Denis Balibouse 

An American bison (Bison bison) calf stands on a mound of earth in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 15, 2014.The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 15, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An adult American bison (bison bison) approaches a calf in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 15, 2014.The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 15, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

A post with a sign showing a bison stands in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An American bison stands in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

Workers of the El Uno Ecological Reserve look out for American bison in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 15, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 15, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An American bison stands in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An American bison stands in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT TPX IMAGES OF THE DAY) 

An American bison stands in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An American bison calf stands next to its mother in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An American bison calf feeds from its mother in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An American bison (bison bison) walks with her new-born calf in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT TPX IMAGES OF THE DAY) 

An American bison (bison bison) licks her new-born calf in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT) 

An American bison (bison bison) licks her new-born calf in the grasslands of the Janos Biosphere Reserve in Janos, in Chihuahua state, May 16, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve. Picture taken May 16, 2014. REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT TPX IMAGES OF THE DAY) 

A woman looks at an American bison (bison bison) standing on the grasslands in the Janos Biosphere Reserve in Janos, in Chihuahua state, May 15, 2014. The bison is one of 300 endangered species in Mexico and fundamental for the recovery of the Chihuahan Desert grasslands according to the director of the El Uno Ecological Reserve. Bison are an essential part of the ecosystem in supporting populations of other species in the reserve. Bison break the ground with their step and allow plants to grow, promote water filtration and keep the grass at a height perfect for other species like the prairie dog to thrive. As part of the five-year old Bison Reintroduction Project by The Nature Conservancy, NGOs, universities and government agencies, eight more adult bison, five females and three males, just arrived from New Mexico and were released in Janos, totalling now 61 bison in the reserve Picture taken May 15, 2014 REUTERS/Jose Luis Gonzalez (MEXICO - Tags: ANIMALS ENVIRONMENT TPX IMAGES OF THE DAY) 

A bison is seen in a forest in the Nalibokskaya Pushcha Reserve, near the village of Rum, some 80 km (50 miles) west of Minsk, November 1, 2013. The bison, a national symbol of Belarus, is the largest wild animal in the country, and several dozens of them live in this reserve, which has the largest forest in Belarus. REUTERS/Vasily Fedosenko (BELARUS - Tags: ANIMALS ENVIRONMENT) 

A car is stopped by a herd of bison crossing the highway in Yellowstone National Park, Wyoming, June 8, 2013. Yellowstone National Park is the world's first national park founded in 1872 and sits atop the largest super volcano in North America, the Yellowstone Caldera. REUTERS/Jim Urquhart (UNITED STATES - Tags: ENVIRONMENT) 

A bison emerges after swimming across the Yellowstone River in Yellowstone National Park, Wyoming, June 21, 2011. On average over 3,000 bison live in the park. REUTERS/Jim Urquhart (UNITED STATES) 

Polmos Top executives stand in front of a screen at the Warsaw stock exchange when Polish distiller Polmos Bialystok, owner of the Zubrowka vodka brand, slipped at their debut in Warsaw. Polmos Bialystok executives Jan Malachowski (R) Sergiusz Gwozdziej (2R) Henryk Wnorowski (2L) and Boguslaw Wojtach (L) stand in front of a screen at the Warsaw stock exchange May 12, 2005. Shares in Polish distiller Polmos Bialystok, owner of the Zubrowka (Bison Grass) vodka brand, slipped at their Warsaw debut on Thursday despite heavy demand in its initial public offering (IPO). REUTERS/Katarina Stoltz 

A man walks in front of a screen at the Warsaw stock exchange May 12, 2005. Shares in Polish distiller Polmos Bialystok, owner of the Zubrowka (Bison Grass) vodka brand, slipped at their Warsaw debut on Thursday despite heavy demand in its initial public offering (IPO). REUTERS/Katarina Stoltz