A bird swoops in to deliver its food to its chick, ramming it deep into its mouth while in flight. The photos of the swallows were captured by Kelvin Leong in Hampstead Wetlands Park, Singapore in July 2023. (Photo by Kelvin Leong/Solent News & Photo Agency)

Wearing a devil mask, a reveler dances through the streets during the “Diablada de Pillaro”, or the Devils of Pillaro festival, to send out the old year and bring in the new, in the Andean town of Pillaro, Ecuador, January 1, 2024. (Photo by Carlos Noriega/AP Photo)

A Lion-Tailed macaque holds a big block of ice with a mix of frozen vegetables and fruit at the zoo in Leipzig, central Germany, Friday, July 19, 2013. Weather forecasts predict sunny weather and warm temperatures for Germany in the next few days. (Photo by Jens Meyer/AP Photo)

A bully greenfinch (left) got its comeuppance when a small but fiery dunnock (right) defended itself with its talons in Suffolk, United Kingdom on April 18, 2022. The smaller bird was perched peacefully before the finch burst onto the scene and aggressively squared up to the dunnock. But as the finch tried to peck at the dunnock, the small brown bird expertly used its foot to slam its mouth shut. (Photo by Paul Sawer/Solent News & Photo Agency)

Honourable mention, Behaviour category. Toss the scorpion – Indian roller playing with its kill by Susmita Datta. The image was taken during an early morning safari drive at Tadoba Andhari Tiger Reserve in India. (Photo by Susmita Datta/PA Wire/Royal Society Publishing Photography Competition 2017)

Winner, photojournalism. Elephant in the room, by Adam Oswell, Australia Zoo. Visitors watch a young elephant performing underwater. Oswell was disturbed by this scene, and organisations concerned with the welfare of captive elephants say performances like this encourage unnatural behaviour. In Thailand, there are now more elephants in captivity than in the wild. With the Covid pandemic causing tourism to collapse, elephant sanctuaries are becoming overwhelmed with animals that can no longer be looked after by their owners. (Photo by Adam Oswell/Wildlife Photographer of the Year 2021)

China has recently relaxed its one child policy that was used to control a burgeoning population. A couple has their wedding photo taken in an old quarter of Beijing on May 24, 2016. (Photo by Michael Robinson Chavez/The Washington Post)

Bonobo apes, primates unique to Congo and humankind's closest relative, groom one another at a sanctuary just outside the capital Kinshasa, Congo on October 31, 2006. (Photo by Finbarr O'Reilly/Reuters)