The desert locust (Schistocerca gregaria) is the most destructive migratory pest in the world. Dense and highly mobile desert locust swarms can form in response to environmental stimuli. They are ravenous eaters that consume their own weight per day, targeting food crops and forage. Just a single square kilometre of swarm can contain up to 80 million adults, with the capacity to consume the same amount of food in one day as 35,000 people. Large swarms pose a major threat to food security and rural livelihoods.