This picture taken on May 4, 2020 shows gentoo penguins chasing krill during feeding time in their enclosure at the Ocean Park theme park, which is currently closed due to the COVID-19 novel coronavirus, in Hong Kong. Save for an absence of gawping crowds, life for the penguins of Hong Kong's Ocean Park has been much the same during the coronavirus pandemic – but their carers have worked long shifts to keep the monochrome troupe healthy. (Photo by Anthony Wallace/AFP Photo)

Pigeons cool down at a public fountain on a hot summer day at University Plaza in downtown Bucharest, Romania, 10 June 2020. Temperatures in Bucharest reached 30 degrees Celsius. (Photo by Robert Ghement/EPA/EFE)

A man and a woman take a selfie on Russian Navy Day in St Petersburg, Russia on July 26, 2020. (Photo by Roman Pimenov/TASS)

After finding the bricklaying business too full of ups and downs, this amazing young girl decided to take a shot at iron girdering for a change. She is Miss “Collie” Collier, a reporter for the Chicago Herald-Examiner. August 17, 1920. (Photo by Bettmann Archive/Getty Images)

German model Micaela Schaefer (2nd from Left) and German actor Yvonne Woelke (2nd from right) sighted during Oktoberfest at Theresienwiese on September 21, 2014 in Munich, Germany. (Photo by Chad Buchanan/Getty Images)

Couples dance samba as smoke rises from a burning pyrotechnics warehouse in Moscow on June 19 2021. (Photo by Dimitar Dilkoff/AFP Photo)

Demonstrators made barricades during clashes with police following a protest condemning the arrest of rap artist Pablo Hasél in Barcelona, Spain, Thursday, February 18, 2021. The imprisonment of a rap artist for his music praising terrorist violence and insulting the Spanish monarchy has set off a powder keg of pent-up rage this week in Spain. (Photo by Emilio Morenatti/AP Photo)

A waxworks artist retouches one of the wax figures at the unveiling of Little Mix waxwork figures at Madame Tussauds, in London, Britain, July 28, 2021. (Photo by Peter Nicholls/Reuters)