pheromone trail

A pheromone trail is a chemical signal left by animals, such as ants, to communicate with others of their species. When an ant finds a food source, it deposits pheromones along its path back to the nest. This trail guides other ants to the food, and as more ants follow and reinforce it, the route becomes stronger. Pheromone trails help groups efficiently locate resources and coordinate their activities, functioning as a form of indirect communication that influences group behavior through chemical cues.