Wasps are now out in force, and more people are being stung. The wasp nests are underground, or under roof tiles, and may contain many thousands of wasps at their peak. The young queens are flying around looking for a mate, and the males have recently been emerging from the nest in order to mate with them. Both sexes seek mates from other colonies. There are also many sterile worker females in the air, killing other insects and taking them back to feed the larvae that are still in the nest. The queens and the males live a luxurious life, with no work to do, and they feed on nectar and soft, sweet fruit. It is when the queens, who have stings, come hunting for fruit, jam and cakes that careless people who annoy them get hurt. By the time winter comes, the founder queen, all the males and all the workers will be dead. Only the young queens, already impregnated, will survive, and they will hibernate. In spring they will become the new founder queens. Each of them will build a papery new nest from wood that they have gouged out and mixed with saliva, and in it they will lay the eggs that will start off the new colony.