The Spanish photographer Xavi Bou digitally combines sequential pictures of birds to create a single image, or chronophotograph, that reveals the shapes of their flight paths against Catalonian skies. His work shows the variety and beauty to be found in the daily activities of the local birds, including spiralling storks, swooping starlings and giddy swifts. Here: European herring gulls at Llobregat Delta. (Photo by Xavi Bou/Rex Features/Shutterstock)

A woman affected by tear gas is assisted during a May Day protest against austerity measures, in San Juan, Puerto Rico May 1, 2018. (Photo by Alvin Baez/Reuters)

General view of festival goers at the main stage on Day 3 of Download festival at Donnington Park on June 12, 2022 in Donnington, England. (Photo by Chris Bethell/The Guardian)

American actress Kristen Stewart arrives at the Oscars on Sunday, March 27, 2022, at the Dolby Theatre in Los Angeles. (Photo by Jae C. Hong/AP Photo)

This handout picture released by the Icelandic Coast Guard on May 29, 2024 shows billowing smoke and flowing lava pouring out of a new fissure, during a surveilance flight above a new volcanic eruption on the outskirts of the evacuated town of Grindavik, western Iceland. (Photo by Icelandic Coast Guard/Handout via AFP Photo)

English television personality Gabby Allen attends the 2025 BAFTA Television Awards with P&O Cruises at The Royal Festival Hall on May 11, 2025 in London, England. (Photo by James Curley)

Forrest Walker, “Police Walk”. Walker describes this shot, taken in 2015 at the last officially permitted Pride parade in Istanbul, as a tense and surreal experience. His focus is on a woman walking calmly in front of a line of riot police, her attitude part defiance and part performance. (Photo by Forrest Walker/All About Photo awards 2025 via The Guardian)

Richard Rude Junior of the United States, competes on his way to win the UCI MTB Enduro Men Elite, Mountain Bike World Championship, Monday, September 1, 2025, in Fiesch, Switzerland. (Photo by Maxime Schmid/Keystone via AP Photo)