Spring is typically when large numbers of winged termites (known as “swarmers”) emerge inside structures. This, along with other signs of termites noted during real estate inspections is what usually triggers the initial concern of homeowners. In nature, termites swarm in order to disperse and start new colonies. After a colony reaches a critical size (typically requiring 5-8 years), winged reproductive termites are produced. In response to warmer temperatures and rainfall, the winged termites emerge from the colony and fly into the air.