Migrating starlings fly in formation near the southern Israeli town of Rahat February 2, 2015. The phenomenon, known as murmuration, is most common during the winter months. (Photo by Nir Elias/Reuters)

Tens of millions of red crabs make their way across Christmas Island, Australia on November 13, 2021 during their annual migration from the forest to the ocean, swamping roads and bridges. (Photo by Parks Australia/Animal News Agency)

A homeless street child looks in the window of a car in Jammu, India, Friday, January 6, 2017. Some 800 million people in the country live in poverty, many of them migrating to big cities in search of a livelihood and often ending up on the streets. (Photo by Channi Anand/AP Photo)

A humpback whale is seen at the beginning of whale watching season during a Manly Whale Watching tour on June 8, 2011 in Sydney, Australia. The first day of winter in New South Wales, June 1st, marks the start of the Humback and southern right whales migration from southern regions to the north to warmer waters. Whale watchers should expect tohave plenty to see with the whale population increasing each year. The migration north continues through July and with the whales returning between September and November. (Photo by Cameron Spencer/Getty Images)

In this Friday, February 6, 2015 photo, sandhill cranes begin to stir after resting for the night at a roosting location along their winter migration route in Cecilia, Ky. According to counts made by biologists with the Kentucky Fish and Wildlife Resources, about 12,000 of the birds have stopped in Cecilia this week during their winter northward migration on their way to their nesting grounds in the Great Lakes region. (Photo by David Stephenson/AP Photo)

Men play cricket in Kabul, Afghanistan, 16 September 2021. A humanitarian crisis and alleged widespread human rights violations are among the top challenges Afghanistan faces a month after the Taliban's lightning-fast capture of Kabul. The economic crisis threatened to push 97 percent of the 40 million people into poverty by mid-2022, the United Nations has warned. (Photo by EPA/EFE/Stringer)

A man in a wartime uniform, poses for a photo on an abandoned tank at a beach, ahead of the 60th anniversary of Second Taiwan Straits Crisis against China, in Kinmen, Taiwan on August 19, 2018. (Photo by Tyrone Siu/Reuters)

People watch a flock during the annual sheep parade, during which shepherds exercise their right to use traditional migration routes for their livestock from northern Spain to winter grazing pasture land in the southern areas of the country, on the streets of Madrid, Spain on October 23, 2022. (Photo by Violeta Santos Moura/Reuters)