Fari Sow, a herder, is pictured at the Ranch Djibo Leity Ka, also known as Doly Ranch, in Linguere department, Louga region, Senegal November 18, 2020. Picture taken November 18, 2020. REUTERS/Christophe Van Der Perre

Fari Sow, a herder, is photographed at the Ranch Djibo Leity Ka, also known as Doly Ranch, in Linguere department, Louga region, Senegal November 18, 2020. Picture taken November 18, 2020. REUTERS/Christophe Van Der Perre

Fari Sow, a herder, sits with his relatives at the Ranch Djibo Leity Ka, also known as Doly Ranch, in Linguere department, Louga region, Senegal November 18, 2020. Picture taken November 18, 2020. REUTERS/Christophe Van Der Perre

A herder walks with a flock at the Ranch Djibo Leity Ka, also known as Doly Ranch, in Linguere department, Louga region, Senegal November 18, 2020. Picture taken November 18, 2020. REUTERS/Christophe Van Der Perre

Ranger Shoham Saginur, rides a horse as he works with Israeli firm, BeeFree Agro developers of a method which uses drones to herd and observe cattle, at a ranch near Katzrin in the Israeli-occupied Golan Heights November 29, 2020. Picture taken November 29, 2020. REUTERS/Ronen Zvulun

Cows gather as a drone flies above them, herding and observing them, as part of a method developed by Israeli firm BeeFree Agro, at a ranch near Katzrin in the Israeli-occupied Golan Heights November 29, 2020. Picture taken November 29, 2020. REUTERS/Ronen Zvulun

Ranger Shoham Saginur, rides a horse as he works with Israeli firm, BeeFree Agro developers of a method which uses drones to herd and observe cattle, at a ranch near Katzrin in the Israeli-occupied Golan Heights November 29, 2020. Picture taken November 29, 2020. REUTERS/Ronen Zvulun

Ranger Shoham Saginur, rides a horse as he works with Israeli firm, BeeFree Agro developers of a method which uses drones to herd and observe cattle, at a ranch near Katzrin in the Israeli-occupied Golan Heights November 29, 2020. Picture taken November 29, 2020. REUTERS/Ronen Zvulun

A horse stands nearby as a drone flies above to herd and observe cattle, part of a method developed by Israeli firm BeeFree Agro, at a ranch near Katzrin in the Israeli-occupied Golan Heights November 29, 2020. Picture taken November 29, 2020. REUTERS/Ronen Zvulun

Ranger Shoham Saginur, rides a horse as he works with Israeli firm, BeeFree Agro developers of a method which uses drones to herd and observe cattle, at a ranch near Katzrin in the Israeli-occupied Golan Heights November 29, 2020. Picture taken November 29, 2020. REUTERS/Ronen Zvulun

Cows gather as a drone flies above them, herding and observing them, as part of a method developed by Israeli firm BeeFree Agro, at a ranch near Katzrin in the Israeli-occupied Golan Heights November 29, 2020. Picture taken November 29, 2020. REUTERS/Ronen Zvulun

A yak herder walks on a plain near Noijin Kangsang mountain in Gyangze County, during a government-organised tour of the Tibet Autonomous Region, China, October 18, 2020. Picture taken October 18, 2020. REUTERS/Thomas Peter

A goat herder watches his flock near the decommissioned Gangu coal-fired power plant in Maojiaping village, Gangu County, Gansu province, China, September 17, 2020. REUTERS/Thomas Peter SEARCH "PETER COAL" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Cattle herders dressed in traditional Bavarian clothes guide cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

Cattle herders dressed in traditional Bavarian clothes guide cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

One of cattle herders dressed in traditional Bavarian clothes guides cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

Cattle herders dressed in traditional Bavarian clothes guide cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach TPX IMAGES OF THE DAY

One of cattle herders dressed in traditional Bavarian clothes guides cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

One of cattle herders dressed in traditional Bavarian clothes guides cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

One of cattle herders dressed in traditional Bavarian clothes guides cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

Cattle herders dressed in traditional Bavarian clothes guide cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

Cattle herders dressed in traditional Bavarian clothes guide cows down from their summer mountain pasture during the annual end-of-summer cattle drive (Almabtrieb) near Bad Hindelang, Germany, September 26, 2020. REUTERS/Kai Pfaffenbach

A farmer tends to his sheep on a farm near Hawes in North Yorkshire, Britain January 9 2020. REUTERS/Phil Noble

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Vault - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Rings - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Rings - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Rings - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Pommel Horse - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Pommel Horse - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Horizontal Bar - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Horizontal Bar - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Horizontal Bar - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Artistic Gymnastics - 2019 World Artistic Gymnastics Championships - Men's Qualifications - Horizontal Bar - Hanns-Martin-Schleyer-Halle, Stuttgart, Germany - October 6, 2019 Germany's Philipp Herder in action REUTERS/Wolfgang Rattay

Map showing area in Qinghai province where China's biggest national park will be opened next year.

A general view shows homes of Tibetan herders in a resettlement village built by local authorities in Madoi county, Golog Tibetan Autonomous Prefecture, Qinghai province, China August 31, 2019. Picture taken August 31, 2019. REUTERS/Ryan Woo

A camel herder collects feces at a farm in Adhen Village, Ras al Khaimah, United Arab Emirates July 16, 2019. Picture taken July 16, 2019. REUTERS/Christopher Pike

A camel herder collects feces at a farm in Adhen Village, Ras al Khaimah, United Arab Emirates July 16, 2019. Picture taken July 16, 2019. REUTERS/Christopher Pike

A camel herder collects feces at a farm in Adhen Village, Ras al Khaimah, United Arab Emirates July 16, 2019. Picture taken July 16, 2019. REUTERS/Christopher Pike

A camel herder collects feces at a farm in Adhen Village, Ras al Khaimah, United Arab Emirates July 16, 2019. Picture taken July 16, 2019. REUTERS/Christopher Pike

A camel herder walks near Adhen Village, Ras al Khaimah, United Arab Emirates July 16, 2019. Picture taken July 16, 2019. REUTERS/Christopher Pike

A camel herder walks near Adhen Village, Ras al Khaimah, United Arab Emirates July 16, 2019. Picture taken July 16, 2019. REUTERS/Christopher Pike

A Tibetan herder leads his yaks through a mountain in the Amne Machin range in China’s western Qinghai province, June 7, 2019. REUTERS/Aly Song

Herders drive cattle, which were raised on pasture grown on an area of deforested Amazon rainforest, along the Trans-Amazonian highway near the city of Uruara, Para State, Brazil, April 25, 2013. Picture taken April 25, 2013. REUTERS/Nacho Doce

Turkana warriors pass by a skull of a Dassenach warrior who was, according to a Turkana warrior, killed when he tried to ambush Turkana cattle herders in Ilemi Triangle, Kenya March 26, 2019. Picture taken on March 26, 2019. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY

A skull of a Dassenach warrior who was, according to a Turkana warrior, killed when he tried to ambush Turkana cattle herders is seen in Ilemi Triangle, Kenya March 26, 2019. Picture taken on March 26, 2019. REUTERS/Goran Tomasevic TPX IMAGES OF THE DAY

Turkana warriors look at a skull of a Dassenach warrior who was, according to a Turkana warrior, killed when he tried to ambush Turkana cattle herders in Ilemi Triangle, Kenya March 26, 2019. Picture taken on March 26, 2019. REUTERS/Goran Tomasevic

A skull of a Dassenach warrior who was, according to a Turkana warrior, killed when he tried to ambush Turkana cattle herders is seen in Ilemi Triangle, Kenya March 26, 2019. Picture taken on March 26, 2019. REUTERS/Goran Tomasevic

Turkana warriors pass by a skull of a Dassenach warrior who was, according to a Turkana warrior, killed when he tried to ambush Turkana cattle herders in Ilemi Triangle, Kenya March 26, 2019. Picture taken on March 26, 2019. REUTERS/Goran Tomasevic

Hassan Dikko Wanbai, the head of a Fulani herder community, sits during an interview with Reuters in Paiko, Niger State, Nigeria November 27, 2018. Picture taken November 27, 2018. REUTERS/Afolabi Sotunde

A view shows an IDP camp housing families, who escaped violence between herders and farming communities, in Daudu, on the outskirts of Makurdi, Nigeria November 29, 2018. Picture taken November 29, 2018. REUTERS/Afolabi Sotundi

A view shows an IDP camp housing families, who escaped violence between herders and farming communities, in Daudu on the outskirts of Makurdi, Nigeria November 29, 2018. Picture taken November 29, 2018. REUTERS/Afolabi Sotundi

Reuters analysis of satellite data shows how a massive expansion of farming in Nigeria's Middle Belt has cut access to grazing land for nomadic herders and fuelled persistent violence

Reuters analysis of satellite data shows how a massive expansion of farming in Nigeria's Middle Belt has cut access to grazing land for nomadic herders and fuelled persistent violence embed code and instructions: https://reut.rs/2R5kOJ7

Tsetse, six-year-old daughter of Dukha herder Erdenebat Chuluu, sits among her family's reindeer in a forest near the village of Tsagaannuur, Khovsgol aimag, Mongolia, April 21, 2018. REUTERS/Thomas Peter SEARCH "POY GLOBAL" FOR FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2018 PACKAGES. TPX IMAGES OF THE DAY.

Osai Ojigho, Amnesty International's Nigeria Director, attends the launch of the report: "Harvest of Death: Three Years of Bloody Clashes Between Farmers and Herders" in Abuja, Nigeria December 17, 2018. REUTERS/Afolabi Sotunde

Tsetse, six-year-old daughter of Dukha herder Erdenebat Chuluu, sits among her family's reindeer in a forest near the village of Tsagaannuur, Khovsgol aimag, Mongolia, April 21, 2018. REUTERS/Thomas Peter SEARCH "POY GLOBAL" FOR FOR THIS STORY. SEARCH "REUTERS POY" FOR ALL BEST OF 2018 PACKAGES. TPX IMAGES OF THE DAY.

A Palestinian woman herds animals in the Bedouin village of Khan al-Ahmar, in the occupied West Bank September 6, 2018. REUTERS/Ammar Awad TPX IMAGES OF THE DAY

A shepherd walks next to the tents erected for refugees in Syria as it is seen from the Israeli-occupied Golan Heights, Israel July 17, 2018. REUTERS/Ronen Zvulun

Map locating projects in development in northern Scandinavian and northern European Russia.