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)

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A sandstorm hits the city of Zhangye in Gansu province, China on November 27, 2018. (Photo by Reuters/China Stringer Network)

The music group, Boyfriend, performs at the Gentilly Stage at the New Orleans Jazz & Heritage Festival in New Orleans, Thursday, April 25, 2019. (Photo by Doug Parker/AP Photo}

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Mailin Gobbo reacts as she leaves the courtroom after hearing a judge acquit former Catholic Priest Carlos Eduardo Jose, who she says sexually abused her for years when she was an adolescent, in San Martin, Argentina, Tuesday, March 9, 2021. The court acquitted the 62-year-old, citing the statute of limitations had run out. (Photo by Natacha Pisarenko/AP Photo)

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