Usually locusts are solitary; however, as the video below shows, sudden changes in their behavior may sometimes occur. The behavioral pattern largely depends on the density of population, thus swarming is a natural response to an overcrowded habitat.
Argentina's agricultural agency Sensaa has been registering a gradual increase in the number of insects that eat crops over 5 years. In 2016, the country's farms rang the alarm due to the biggest invasion of locusts in 60 years, according to The New York Times.
