Wildebeests are seen within the Kimana Sanctuary, part of a crucial wildlife corridor that links the Amboseli National Park to the Chyulu Hills and Tsavo protected areas, within the Amboseli ecosystem in Kimana, Kenya February 8, 2021. Picture taken February 8, 2021. REUTERS/Thomas Mukoya

Wildebeests are seen within the Kimana Sanctuary, part of a crucial wildlife corridor that links the Amboseli National Park to the Chyulu Hills and Tsavo protected areas, within the Amboseli ecosystem in Kimana, Kenya February 8, 2021. Picture taken February 8, 2021. REUTERS/Thomas Mukoya

Wildebeests are seen at Amboseli National park, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Njeri Mwangi

Zebras watch as Wildebeests try and cross a waterway in the Amboseli National Park, Kenya, August 11, 2020. REUTERS/Baz Ratner

Wildebeests cross a water way in the Amboseli National Park, Kenya, August 11, 2020. REUTERS/Baz Ratner

A wildebeest walks in the water of lake Kioko in the Amboseli National Park, Kenya, August 11, 2020. REUTERS/Baz Ratner

Wildebeests (Connochaetes taurinus) gather as they prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

Giraffes are seen among wildebeests (Connochaetes taurinus) as they prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Visitors gather to witness the wildebeests (Connochaetes taurinus) crossing the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Kenya's Cabinet Secretary for Tourism & Wildlife Najib Balala uses his laptop as he witnesses wildebeests (Connochaetes taurinus) migration, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

A wildebeest (Connochaetes taurinus) is seen after crossing the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

A lioness is seen in the grass during wildebeests' (Connochaetes taurinus) migration, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

A vulture arrives to feed on the carcass of wildebeests (Connochaetes taurinus) that died in a stampede as they attempted to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) are seen after crossing the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) gather as they prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Vultures feed on the carcass of wildebeests (Connochaetes taurinus) that died in a stampede as they attempted to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) gather as they prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya TPX IMAGES OF THE DAY

A Maasai tour guide wears a face mask and rubber gloves as a preventive measure against the spread of coronavirus disease (COVID-19), during the wildebeests' (Connochaetes taurinus) migration, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) gather as they prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeest (Connochaetes taurinus) prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

An elephant grazes during wildebeests' (Connochaetes taurinus) migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

Zebras drink water as wildebeests (Connochaetes taurinus) prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

Whistling ducks are seen near the wildebeests (Connochaetes taurinus) which prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

A Wildebeest (Connochaetes taurinus) prepares to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 8, 2020. Picture taken August 8, 2020. REUTERS/Thomas Mukoya

A wildebeest (Connochaetes taurinus) prepares to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests (Connochaetes taurinus) are seen after crossing the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Nairobi, in the Maasai Mara game reserve, Kenya August 9, 2020. Picture taken August 9, 2020. REUTERS/Thomas Mukoya

Wildebeests are seen in Masai Mara National Reserve, Kenya, August 3, 2019 REUTERS/Goran Tomasevic

Wildebeests are seen in Masai Mara National Reserve, Kenya, August 3, 2019 REUTERS/Goran Tomasevic

Metallic sculptures depicting wildebeest are seen at Jomo Kenyatta International Airport during a labour dispute that grounded flights, on the outskirts of Nairobi, Kenya March 6, 2019. REUTERS/Thomas Mukoya

Wildebeests walk on a lake at the Amboseli National Park, Kenya August 18, 2018. Picture taken August 18, 2018. REUTERS/Baz Ratner

Wildebeests (connochaetes taurinus) cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

Wildebeests (connochaetes taurinus) cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

Wildebeests (connochaetes taurinus) cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

A wildebeest (connochaetes taurinus) and her calf are pictured as they prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

Wildebeests (connochaetes taurinus) graze as they prepare to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

Wildebeests (connochaetes taurinus) jump to cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

Wildebeests (connochaetes taurinus) cross the Mara river during their migration to the greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

Wildebeests (connochaetes taurinus) cross the Mara river during their migration to greener pastures, between the Maasai Mara game reserve and the open plains of the Serengeti, southwest of Kenya's capital Nairobi, August 15, 2016. Picture taken August 15, 2016. REUTERS/Thomas Mukoya

A wildebeest, with tree branches trapped in its horn, is seen in Amboseli National park southeast of Kenya's capital Nairobi, March 25, 2016. Picture taken March 25, 2016. REUTERS/Thomas Mukoya

An elephant walks among zebras and wildebeests in Amboseli National Park, southeast of Kenya's capital Nairobi, March 25, 2016. REUTERS/Thomas Mukoya

Wildebeests are seen during a rain in Amboseli National park, Kenya, February 11,2016. REUTERS/Goran Tomasevic

A worker prepares a trophy of a wildebeest at the taxidermy studio in Pretoria, February 12 2015. Africa's big game hunting industry helps protect endangered species, according to its advocates. Opponents say it threatens wildlife. Now a mooted change in regulations in the United States could affect the number of foreigners who come to Africa to hunt big game, damaging the industry and possibly hurting wildlife. Picture taken February 12, 2015. REUTERS/Siphiwe Sibeko

Dead wildebeests are pictured after a stampede during the annual migration float in Mara river in Masai Mara National Reserve October 8, 2014. REUTERS/Goran Tomasevic (KENYA - Tags: ENVIRONMENT ANIMALS)

Vultures eat a dead wildebeest in Masai Mara National Reserve October 8, 2014. REUTERS/Goran Tomasevic (KENYA - Tags: ENVIRONMENT ANIMALS)

Vultures rush to eat a dead wildebeest in Masai Mara National Reserve October 8, 2014. REUTERS/Goran Tomasevic (KENYA - Tags: ENVIRONMENT ANIMALS)

Dead wildebeests are pictured after a stampede during the annual migration float in Mara river in Masai Mara National Reserve October 8, 2014. REUTERS/Goran Tomasevic (KENYA - Tags: ENVIRONMENT ANIMALS)

Dead wildebeests are pictured after a stampede during the annual migration float in Mara river in Masai Mara National Reserve October 8, 2014. REUTERS/Goran Tomasevic (KENYA - Tags: ENVIRONMENT ANIMALS)

An elephant grazes among wildebeests and zebras during a census at the Amboseli National Park, 290 km (188 miles) southeast of Kenya's capital Nairobi, October 9, 2013. Kenyan and Tanzanian governments are conducting a joint aerial count of elephants and other large mammals in the shared ecosystem of the Amboseli- West Kilimanjaro and Natron- Magadi landscape. The census will cover a 25,623 square kilometers area including 9,214 square kilometers of the Amboseli area, 6348 square kilometers of the Namanga-Magadi areas in south-western Kenya and 3,013 square kilometers of the West Kilimanjaro and 7,047 square kilometersof the Natron areas in North Tanzania. Picture taken October 9, 2013. REUTERS/Thomas Mukoya (KENYA - Tags: ENVIRONMENT ANIMALS)

A hot-air balloon flies over wildebeests (connochaetes taurinus) during their migration in the Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, August 25, 2010. The migration is the world's greatest wildlife spectacle taking place between the open plains of the Serengeti and the Masaai Mara as the animals migrate to greener pastures as the seasons change and the circle of life and death continues. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT ANNIVERSARY TRAVEL ANIMALS)

Wildebeests (connochaetes taurinus) prepare to cross the Mara river during a migration in the Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, August 25, 2010. The migration is the world's greatest wildlife spectacle taking place between the open plains of the Serengeti and the Masaai Mara as the animals migrate to greener pastures as the seasons change and the circle of life and death continues. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT ANNIVERSARY TRAVEL ANIMALS)

Wildebeests (connochaetes taurinus) run over a hippopotamus as they cross the Mara river during a migration in the Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, August 25, 2010. The migration is the world's greatest wildlife spectacle taking place between the open plains of the Serengeti and the Masaai Mara as the animals migrate to greener pastures as the seasons change and the circle of life and death continues. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT ANNIVERSARY TRAVEL ANIMALS)

Wildebeests (connochaetes taurinus) cross the Mara river during a migration in the Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, August 25, 2010. The migration is the world's greatest wildlife spectacle taking place between the open plains of the Serengeti and the Masaai Mara as the animals migrate to greener pastures as the seasons change and the circle of life and death continues. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT ANNIVERSARY TRAVEL ANIMALS)

Wildebeests (connochaetes taurinus) prepare to cross the Mara river during a migration in the Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, August 25, 2010. The migration is the world's greatest wildlife spectacle taking place between the open plains of the Serengeti and the Masaai Mara as the animals migrate to greener pastures as the seasons change and the circle of life and death continues. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT ANNIVERSARY TRAVEL ANIMALS)

Wildebeests (connochaetes taurinus) prepare to cross the Mara river during a migration in the Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, August 25, 2010. The migration is the world's greatest wildlife spectacle taking place between the open plains of the Serengeti and the Masaai Mara as the animals migrate to greener pastures as the seasons change and the circle of life and death continues. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT ANNIVERSARY TRAVEL ANIMALS)

A Wildebeest (connochaetes taurinus) nurses its calf before crossing the Mara river during a migration in the Masaai Mara game reserve, 270 km (165 miles) southwest of capital Nairobi, August 25, 2010. The migration is the world's greatest wildlife spectacle taking place between the open plains of the Serengeti and the Masaai Mara as the animals migrate to greener pastures as the seasons change and the circle of life and death continues. REUTERS/Thomas Mukoya (KENYA - Tags: SOCIETY ENVIRONMENT ANNIVERSARY ANIMALS TRAVEL)