A man sleeps at Beirut's Corniche, a seaside promenade, in Lebanon May 2, 2016. (Photo by Alia Haju/Reuters)

Bloodthirsty by Thomas P. Peschak, Germany/South Africa — winner, Behaviour: birds. When rations run short on Wolf Island, in the remote northern Galápagos, the sharp-beaked ground finches become vampires. Their sitting targets are Nazca boobies and other large birds. The finches rely on a scant diet of seeds and insects, which regularly dries up, so they drink blood to survive. ‘I’ve seen more than half a dozen finches drinking from a single Nazca booby,’ says Tom. Rather than leave their nests the boobies tolerate the vampires, and the blood loss doesn’t seem to cause permanent harm. (Photo by Thomas P. Peschak/2018 Wildlife Photographer of the Year)

Brown bear cubs eat out of garbage bins at a residential area near the forest in Sarikamis district of Kars, Turkiye on May 30, 2023. (Photo by Huseyin Demirci/Anadolu Agency via Getty Images)

Members of the South Korean Confederation of Trade Unions (KCTU) perform with traditional Korean masks during a rally against the government's Labor Policy in Seoul, South Korea, 06 July 2023. South Korean Confederation of Trade Unions (KCTU) begen a general strike on a national scale from 03 July against the South Korean government's labor policy and against Japan's disposal of treated radioactive water from the Fukushima nuclear power plant into the sea. (Photo by Jeon Heon-Kyun/EPA)

Participants make kimchi during an event where soldiers from the US, South Korea and residents collaborated by making the side dish for needy members of the local community in Dongducheon, Gyeonggi Province, about 38 kilometers north of Seoul, on November 22, 2023. Participants produced 2,500 kilograms of fresh kimchi, which was divided into 250 boxes and distributed to needy households in the local community after the event. (Photo by Anthony Wallace/AFP Photo)

Washermen put their clothes out to dry on the banks of the River Yamuna as seen from a railway bridge near Agra, India, Saturday, December 17, 2022. (Photo by Rajesh Kumar Singh/AP Photo)

Children wearing cardboard lion dance masks walk along a street in Beijing on January 13, 2023. China has announced its first overall population decline in recent years amid an aging society and plunging birthrate. (Photo by Mark Schiefelbein/AP Photo)

Iraqi Kurdish women train weight lifting at a centre in Iraq's Kurdish regional capital of Arbil on February 2, 2022. Women's sports have developed at a sluggish pace across much of conservative Iraq, which has struggled through decades of conflict. But the Kurdistan region was spared the brunt of the violence and destruction, and its infrastructure, facilities and government funding have paved the way for a boom in professional women's sports. (Photo by AFP Photo/Stringer)