Two grey crowned cranes are seen inside an enclosure at the Paris Zoological Park in the Bois de Vincennes before the reopening following the outbreak of the coronavirus disease (COVID-19) in France, May 12, 2021. REUTERS/Benoit Tessier 

An endangered African Crowned Crane chick is being fed by its mother at Folly Farm, Begelly, Wales, Britain September 14, 2020. REUTERS/Rebecca Naden 

An endangered African Crowned Crane chick is being fed by its mother at Folly Farm, Begelly, Wales, Britain September 14, 2020. REUTERS/Rebecca Naden 

An endangered African Crowned Crane chick is being fed by its mother at Folly Farm, Begelly, Wales, Britain September 14, 2020. REUTERS/Rebecca Naden 

An endangered African Crowned Crane chick is being fed by its mother at Folly Farm, Begelly, Wales, Britain September 14, 2020. REUTERS/Rebecca Naden 

An endangered African Crowned Crane chick is being fed by its mother at Folly Farm, Begelly, Wales, Britain September 14, 2020. REUTERS/Rebecca Naden 

An endangered African Crowned Crane chick is seen at Folly Farm, Begelly, Wales, Britain September 14, 2020. REUTERS/Rebecca Naden 

An endangered African Crowned Crane chick is seen with its mother at Folly Farm, Begelly, Wales, Britain September 14, 2020. REUTERS/Rebecca Naden 

A crane towers over the construction site of casino operator Crown Resorts' new resort in Sydney, Australia August 1, 2019. Picture taken August 1, 2019. REUTERS/Byron Kaye 

A grey crowned crane is seen in his enclosure while sitting in the sun at the Hellabrunn zoo in Munich, Germany, May 2, 2019. REUTERS/Michael Dalder 

Cranes can be seen on a construction site at the inner-city suburb of Barangaroo, the site of the Australian casino operator Crown Resorts new Sydney waterfront resort, with the Sydney Opera House located on Sydney Harbour in Australia, August 9, 2018. REUTERS/David Gray 

Cranes can be seen on a construction site at the inner-city suburb of Barangaroo, the site of the Australian casino operator Crown Resorts new Sydney waterfront resort, with the Sydney Opera House located on Sydney Harbour in Australia, August 9, 2018. REUTERS/David Gray 

Cranes can be seen on a construction site at the inner-city suburb of Barangaroo, the site of the Australian casino operator Crown Resorts new Sydney waterfront resort, in Sydney, Australia, August 9, 2018. REUTERS/David Gray 

Grey crowned cranes walk in Amboseli National Park, Kenya, March 17, 2017. Picture taken on March 17, 2017. REUTERS/Goran Tomasevic 

Grey Crowned Cranes are seen in Amboseli National park, Kenya, February 11,2016. REUTERS/Goran Tomasevic 

Red-crowned cranes fly over grassland outside Yuzhno-Kurilsk, the main settlement on the Southern Kurile Island of Kunashir September 15, 2015. Russian residents of the island chain at the centre of a dispute between Japan and Russia that has held up a treaty to formally end World War Two hope a diplomatic solution will lure tourists and investment to help refurbish rickety infrastructure. The Southern Kuriles are referred to in Japan as the Northern Territories. Picture taken September 15, 2015. REUTERS/Thomas Peter 

A grey crowned crane looks at visitors from its enclosure at the Olmense Zoo in Olmen, Belgium, September 2, 2015. REUTERS/Yves Herman 

Crowned cranes are seen in Masai Mara National Reserve October 8, 2014. REUTERS/Goran Tomasevic (KENYA - Tags: ENVIRONMENT ANIMALS) 

A photographer stretches his arm as he takes pictures of a red-crowned crane in Zhalong Nature Reserve, in Heilongjiang province, August 11, 2014. The red-crowned crane is on the red list of endangered species released by the International Union for Conservation of Nature (IUCN), and its population continues to decline. Picture taken August 11, 2014. REUTERS/Jacky Chen (CHINA - Tags: ANIMALS SOCIETY ENVIRONMENT) 

A red-crowned crane spreads its wings in Zhalong Nature Reserve, in Heilongjiang province, August 11, 2014. The red-crowned crane is on the red list of endangered species released by the International Union for Conservation of Nature (IUCN), and its population continues to decline. Picture taken August 11, 2014. REUTERS/Jacky Chen (CHINA - Tags: ANIMALS SOCIETY ENVIRONMENT) 

A crowned crane stands in its snow-covered enclosure during winter in Jerusalem's Biblical Zoo December 12, 2013. REUTERS/Baz Ratner (JERUSALEM - Tags: ANIMALS ENVIRONMENT) 

Two Crowned Crane wonder around a hotel compound in Nairobi April 18, 2013. Picture taken April 18, 2013. REUTERS/Noor Khamis (KENYA - Tags: ANIMALS) 

A Crowned Crane wonders around a hotel compound in Nairobi April 18, 2013. Picture taken April 18, 2013. REUTERS/Noor Khamis (KENYA - Tags: ANIMALS) 

Two Crowned Crane wonder around a hotel compound in Nairobi April 18, 2013. Picture taken April 18, 2013. REUTERS/Noor Khamis (KENYA - Tags: ANIMALS) 

A Crowned Crane grazes at a hotel compound in Nairobi April 18, 2013. Picture taken April 18, 2013. REUTERS/Noor Khamis (KENYA - Tags: ANIMALS TPX IMAGES OF THE DAY) 

A poster of Kuwait's Emir Sheikh Sabah AlAhmed alSabah and the Crown Prince Sheikh Nawaf al Ahmad al Sabah hangs from a crane near a polling station in Adeliah Decembber 1, 2012. The poster reads, "We are loyal and faithful, because of the promise we gave, we will keep listening and obeying the law". REUTERS/Stephanie McGehee(KUWAIT - Tags: POLITICS ELECTIONS) 

A poster of Kuwait's Emir Sheikh Sabah AlAhmed alSabah and the Crown Prince Sheikh Nawaf al Ahmad al Sabah hangs from a crane near a polling station in Adeliah Decembber 1, 2012. The poster reads, "We are loyal and faithful, because of the promise we gave, we will keep listening and obeying the law". REUTERS/Stephanie McGehee(KUWAIT - Tags: POLITICS ELECTIONS) 

An African Crowned Crane found wandering the streets of Encinitas, California is shown safe at the County Department of Animal Services January 9, 2012. The bird, normally found on the savannas of Africa, was coaxed into a woman's garage after she found it honking at her on her home driveway.
REUTERS/Mike Blake (UNITED STATES - Tags: ANIMALS) 

An African Crowned Crane found wandering the streets of Encinitas, California is shown safe at the County Department of Animal Services January 9, 2012. The bird, normally found on the savannas of Africa, was coaxed into a woman's garage after she found it honking at her on her home driveway.
REUTERS/Mike Blake (UNITED STATES - Tags: ANIMALS) 

An African Crowned Crane found wandering the streets of Encinitas, California is shown safe at the County Department of Animal Services January 9, 2012. The bird, normally found on the savannas of Africa, was coaxed into a woman's garage after she found it honking at her on her home driveway.
REUTERS/Mike Blake (UNITED STATES - Tags: ANIMALS) 

An African Crowned Crane found wandering the streets of Encinitas, California is shown safe at the County Department of Animal Services January 9, 2012. The bird, normally found on the savannas of Africa, was coaxed into a woman's garage after she found it honking at her on her home driveway.
REUTERS/Mike Blake (UNITED STATES - Tags: ANIMALS TPX IMAGES OF THE DAY) 

A red-crowned crane is seen at the St-Felicien Wildlife Zoo in St-Felicien, Quebec, October 31, 2011. The red-crowned crane is on the red list of endangered species released by the International Union for Conservation of Nature (IUCN), and its population continues to decline. REUTERS/Mathieu Belanger (CANADA - Tags: ANIMALS) 

A red-crowned crane stands in the grass at the St-Felicien Wildlife Zoo in St-Felicien, Quebec, October 31, 2011. The red-crowned crane is on the red list of endangered species released by the International Union for Conservation of Nature (IUCN), and its population continues to decline. REUTERS/Mathieu Belanger (CANADA - Tags: ANIMALS) 

Red-crowned cranes are seen at the St-Felicien Wildlife Zoo in St-Felicien, Quebec, October 31, 2011. The red-crowned crane is on the red list of endangered species released by the International Union for Conservation of Nature (IUCN), and its population continues to decline. REUTERS/Mathieu Belanger (CANADA - Tags: ANIMALS) 

An African Crown Crane is seen at the Olemse zoo in Olmen May 22, 2009. REUTERS/Yves Herman (BELGIUM SOCIETY ANIMALS) 

Two grey-crowned cranes stand in a pond in the Masai Mara game reserve, 340km from the capital Nairobi, March 4, 2009. The white sandy beaches, wildlife and tropical climate of East Africa are losing their attraction for long-distance visitors facing recession and unemployment as a result of the global financial crisis. Picture taken on March 4, 2009. To match feature AFRICA-TOURISM/ REUTERS/Antony Njuguna (KENYA SOCIETY TRAVEL) 

An African Crowned Crane looks out of its cage at Jordan's zoo near Amman March 29, 2009. REUTERS/Ali Jarekji (JORDAN ANIMALS) 

A Grey Crowned Crane is pictured at the zoo of Hamm November 13, 2008. REUTERS/Ina Fassbender (GERMANY) 

A Grey Crowned Crane is pictured at the zoo of Hamm November 13, 2008. REUTERS/ Ina Fassbender (GERMANY) 

An African Crowned Crane looks out of its cage in a zoo near Amman March 10, 2008. REUTERS/Ali Jarekji (JORDAN) 

An African Crowned Crane looks out of its cage in a zoo near Amman March 10, 2008. REUTERS/Ali Jarekji (JORDAN) 

An African Crowned Crane looks out of its cage in a zoo near Amman March 10, 2008. REUTERS/Ali Jarekji (JORDAN) 

Red-crowned cranes are seen in Kushiro in Japan's northern island of Hokkaido February 8, 2008. REUTERS/Yuriko Nakao (JAPAN) 

Red-crowned cranes are seen in Kushiro in Japan's northern island of Hokkaido February 8, 2008. REUTERS/Yuriko Nakao (JAPAN) 

Two grey crowned cranes walk together on a road in Masai Mara national park November 23, 2006. REUTERS/Petr Josek (KENYA) BEST QUALITY AVAILABLE 

A Crowned crane (Balearica pavonina) is seen at Budapest's Zoo on October 4, 2007. World Animal Day is celebrated worldwide today. REUTERS/Karoly Arvai (HUNGARY) 

A Crowned crane (Balearica Regulorum) is pictured at the 'Tierpark Hagenbeck' zoo in Hamburg September 28, 2007. REUTERS/Christian Charisius (GERMANY) 

Two three week-old Crowned Cranes play with their keeper Yancy Rentz in their enclosure in Berlin zoo August 28, 2007. Rentz has looked after the chicks since they fell out of their nest after they hatched. REUTERS/Hannibal Hanschke (GERMANY) 

Two three week-old Crowned Cranes play with their keeper Yancy Rentz in their enclosure in Berlin zoo August 28, 2007. Rentz has looked after the chicks since they fell out of their nest after they hatched. REUTERS/Hannibal Hanschke (GERMANY) 

Two three week-old Crowned Cranes play with their keeper Yancy Rentz in their enclosure in Berlin zoo August 28, 2007. Rentz has looked after the chicks since they fell out of their nest after they hatched. REUTERS/Hannibal Hanschke (GERMANY) 

Two three week-old Crowned Cranes play with their keeper Yancy Rentz in their enclosure in Berlin zoo August 28, 2007. Rentz has looked after the chicks since they fell out of their nest after they hatched. REUTERS/Hannibal Hanschke (GERMANY) 

A Crowned Crane is seen inside its enclosure at a zoological park in New Delhi July 17, 2007. REUTERS/B Mathur (INDIA) 

A crowned crane is seen inside its enclosure at a zoological park in New Delhi March 15, 2007. REUTERS/B Mathur (INDIA) 

A flock of Japanese red crowned cranes, or Tanchos, prepare to land on the grounds of Tsurui village in eastern part of Hokkaido, northern Japan during snowfall February 11, 2007. REUTERS/Yuriko Nakao (JAPAN) 

A pair Japanese red crowned cranes, or Tanchos, spread their wings in the snow at Tsurui village in eastern part of Hokkaido, northern Japan February 11, 2007. REUTERS/Yuriko Nakao (JAPAN) 

A pair Japanese red crowned cranes, or Tanchos, fly above evening sky of Tsurui village in eastern part of Hokkaido, northern Japan February 9, 2007. REUTERS/Yuriko Nakao (JAPAN) 

A Japanese red crowned cranes is seen in Tsurui village in eastern part of Hokkaido, northern Japan February 9, 2007. REUTERS/Yuriko Nakao (JAPAN) 

A pair of Japanese red crowned cranes prepare to fly above Tsurui village in eastern part of Hokkaido, northern Japan February 9, 2007. REUTERS/Yuriko Nakao (JAPAN) 

A crowned crane is seen inside its enclosure at a zoological park in New Delhi December 7, 2006. The "crown" for which the bird is named is made of a fan of coloured bristle-like feathers. REUTERS/Desmond Boylan (INDIA) 

Two grey crowned cranes walk together on a road in Masai Mara national park November 23, 2006. Picture taken November 23, 2006. REUTERS/Petr Josek (KENYA)