Recently I took this shot of a 'pack' of ants moving towards some destination, and I was wondering, is this normal? Aren't ant scouts lone wolfs, and when a viable source of food is found near the ant colony, the worker ants form a trail to facilitate transport? If so(I'm poorly versed with biology as such, being an electrical engineering student), what purpose could this formation serve, my opinion being bent on supposed predator protection. This is not the only one I've noticed, but it is new to me, and a quick google search without any technical terms to feed it, yielded nothing substantial. This is the monsoon season here in India, if it is of any consequence to this peculiar behaviour.
I'd love to found out more about this(tag edits would be helpful), thank you :D