From the beginning of August to October, large swarms of Vespa ducalis appear on the peak of Mt. Chihsing in Yangmingshan National Park. These sightings have caused immense panic from mountain visitors who promptly called 119 in succession to alert the fire department. They hope to remove the hives of these wasps; but what’s special about the situation is that no one has yet to be stung. After an on-site investigation by bee expert professor Lu Sheng Shan, the results were that the Vespa ducalis species build their hives either underground, in caves or in tree holes around April or May. Being mild in temperament, the Vespa ducalis do not automatically sting humans. Several male wasps collected on site were discovered to not possess stingers, therefore they cannot sting. Large swarms of male wasps search for female wasps (relatively less, in comparison) to undergo nuptial flight. After mating, the male wasp searches for a suitable location to build a hive in preparation for winter. This is a unique ecological sight that belongs only to the Vespa ducalis, so visitors need not panic.