A central figure in videos released by the self-declared Islamic State has been identified as a man from West London. He's seen here dressed in black, threatening Japanese captives Haruna Yukawa (right) and Kenji Goto. Kyodo/Landov hide caption

itoggle caption Kyodo/Landov

The European eagle owl, like this one from the Mulhouse Zoo in eastern France, is one of the largest owl species, with a wingspan of about 6 feet. Sebastien Bozon/AFP/Getty Images hide caption

itoggle caption Sebastien Bozon/AFP/Getty Images

A drone is displayed Wednesday at Paris store Azur Modelisme. Law enforcement officials in the city are concerned about recent unexplained drone fly-bys of high-security sites, including the Eiffel Tower and the U.S. embassy. Eleanor Beardsley/NPR hide caption

itoggle caption Eleanor Beardsley/NPR