The War-Damaged Urban Environment Becomes Deadly Trap for Bats: Case from Kharkiv City (NE Ukraine) in 2022

The full-scale war in Ukraine negatively impacted populations of urban and semi-urban animals. This study examines the effects of war-related damages on urban populations of bats in Kharkiv city (NE Ukraine) during 2022. Our findings suggest that 45.1% of buildings used as wintering roosts for N. noctula were either partially damaged or completely destroyed by shellings, which may have led to the direct killing of approximately 7,000 bats. Additionally, the war-damaged urban environments in Kharkiv serve as a deadly trap for bats during the period of autumn migration or swarming. Bats flew into buildings’ interiors through windows that were left open or broken by blast waves, resulting in entrapment. The total number of N. noctula trapped inside buildings damaged by shelling was 2,836 individuals, with a death rate of approximately 30%. The group size of trapped bats was more numerous than in previous years, and the main findings were concentrated in war-damaged districts of the city.