Rare ‘Crimson-Eye Bats’ Swarm Urban Skies: Mysterious Mass Migration Signals Ecological Anomaly?

Over the past few days, a rare phenomenon has been observed simultaneously across major cities worldwide, with thousands of ‘Crimson-Eye Bats’ migrating in massive swarms through urban skies. This species, known to inhabit deep-sea caves or dense jungles and to strongly avoid light, has never before been documented appearing in large numbers in brightly lit city centers during winter. Animal behavior specialists note that “mass flight during winter, when food sources are scarce and energy expenditure is extreme, runs counter to basic survival instincts.” While environmental factors such as changes in Earth’s magnetic field or global warming are being considered, no definitive cause has been identified.

The appearance of these bat swarms is having tangible effects beyond ecological curiosity, directly impacting urban security infrastructure. The combined body heat and ultrasonic emissions from thousands of bats are generating severe interference in thermal imaging cameras and low-altitude radar systems installed at key city facilities. Law enforcement agencies and private security firms report that “the massive biological signals produced by the bat swarms are overwhelming monitoring systems, creating blind spots where identifying specific entities—such as drones or humans—becomes virtually impossible.” The bat swarms are currently moving from city centers toward sparsely populated outskirts, but their precise routes and ultimate destinations remain unknown.