Eciton burchellii is a species of New World army ant in the genus Eciton. This species, one of the most expansively studied ant species, consists of expansive, organized swarm raids that give it the informal name, Eciton army ant This species displays polymorphic caste features, with the soldier ants having much larger heads and mandibles. The colony lives in bivouacs, which are routinely moved as the foraging paths change. Eciton burchellii colonies cycle between stationary and