American singer Bleta “Bebe” Rexha poses with fans at the iHeartRadio MuchMusic Video Awards (MMVAs) in Toronto, Ontario, Canada on August 26, 2018. (Photo by Mark Blinch/Reuters)

Polar bear twins make their first public appearance with their mother “Freedom” at Ouwehands Zoo Rhenen, in Rhenen, The Netherlands, 19 February 2015. The twins, who were born in November 2014, have not been named because their gender has not yet been determined. (Photo by Bart Maat/EPA)

Professional wrestler Eva Marie attends the Kaleidoscope Ball at 3LABS on May 21, 2016 in Culver City, California. (Photo by Alberto E. Rodriguez/Getty Images)

A model wears a creation for the Elie Saab Spring-Summer 2022 Haute Couture fashion collection, in Paris, Wednesday, January 26, 2022. (Photo by Francois Mori/AP Photo)

Tam Nakano and Maika compete during the Women's Pro-Wrestling “Stardom” at Korakuen Hall on October 17, 2021 in Tokyo, Japan. (Photo by Etsuo Hara/Getty Images)

Carrion crows sit on poles around a field on the outskirts of Frankfurt, Germany, early Monday, June 26, 2023. (Photo by Michael Probst/AP Photo)

Performers take part in the opening ceremony for the Commonwealth Games at the Alexander Stadium in Birmingham, central England, on July 28, 2022. (Photo by Jason Cairnduff/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)