Where do locusts go when there are no plagues?
When conditions are dry, locusts persist in low numbers but are rarely noticed. At low densities locusts behave as individuals, like normal grasshoppers, and do not form into dense aggregations. There is always a background population remaining somewhere in Australia, even during the driest of years, from which numbers can rapidly rebound when conditions improve. The eggs of the Australian plague locust can survive in the soil for many months until rain falls.
