Low density swarms of locusts are on the move in northern and central Victoria.
The locusts, helped by northerly winds, have been spotted in scattered sites across the region.
The Victorian plague locust commissioner, Gordon Berg, says the warm and wet weather is ideal for the pests.
He warns some crop damage is possible.
“For farmers in particular we’d recommend them monitoring the situation and looking for any signs of egg laying, because if they do lay eggs, the eggs will stay in the ground now during the winter and perhaps hatch in spring,” Mr Berg said.
“So we’d be wanting to know where egg laying is occurring.”
The Department of Primary Industries says people should report any sightings of significant locust numbers.