Africanized honey bees are not constantly aggressive; they are more defensive on average and much more likely to escalate when they perceive a threat, but they behave like “normal” honey bees much of the time. Africanized colonies ramp up much faster and harder in defense than European colonies once something crosses their threshold. They respond more quickly to alarm pheromone, send out more workers, and will pursue a target farther and longer. Typical triggers include vibrations, noise (mowers

Killer bees, properly called Africanized honey bees, are a hybrid honey bee known for extremely defensive behavior and attacking in large numbers when they think their nest is threatened. They are dangerous for people because: They react much faster to disturbance than European honey bees and may chase a person for hundreds of meters. A much larger portion of the colony joins the attack, so victims often receive many more stings, which can be fatal even though each sting’s venom is not stronger