A recent study reveals that bat houses, intended as conservation efforts, can become lethal during extreme heat events. While generally beneficial for bat populations, the enclosed structures trap heat, leading to fatal temperatures inside. Researchers found that during periods of high temperatures, the interior of bat houses can exceed the bats’ physiological limits. This poses a significant risk to bat colonies relying on these structures for shelter. The study highlights the unintended consequences of well-intentioned conservation strategies and suggests a need for design modifications or alternative solutions to mitigate the risk during heat waves. Further research is needed to determine optimal bat house placement and construction materials to ensure bat survival in a warming climate.