Locusts
Locusts can be up to 15 cm and travel alone or in groups. When the population grows, they become more social and fly long distances to different countries. They can travel 200 km a day to find food. Swarms develop when the locusts crowd together in large numbers. When heavy rains are followed by a drought, locusts swarm to find food and become aggressive. A swarm of locusts can eat as much food as 2,500 hungry people