Is a trail of ants an or learned behavior?

A trail of ants is primarily a learned behavior that stems from their ability to communicate and share information through pheromones. When foraging, ants leave a chemical trail that other ants can follow to resources. This behavior is learned collectively within the colony as ants reinforce the pheromone path, making it more prominent for others to follow. Thus, while individual ants may not instinctively know to follow a trail, they learn and adapt based on the cues left by their peers.