By jonathan ratautas
•
March 27, 2021
By following pheromone trails laid by scout ants from their colony, foraging ants can gather and store food efficiently. A scout ant first leaves the nest in search of food, wandering somewhat randomly until it discovers something edible. It then consumes some of the food and returns to the nest in a direct line. It seems scout ants can observe and recall visual cues that enable them to navigate quickly back to the nest. Along the return route, the scout ants leave a trail of pheromones—which are special scents they secrete—that guide their nestmates to the food.