Feeding – at certain times of the year feed on insects including caterpillars / harmful flies, as colonies increase they are attracted to food consumed by humans.
Sting – sting repeatedly, will sting if provoked with symptoms range from swelling to life-threatening allergic shock.
Visibility – visible during the day as they don't see well at night.
Nesting - in trees / shrubs, or internally in attics, hollow walls/ flooring, sheds, under porches/eaves of buildings.