I have a hen raising a brood that are about 3 weeks old now... they are confined to a covered run for their protection.... but she does hunt for anything that looks edible and then ‘tid bits’ at them to come check it out...
...but at this age already they’re hunting any bug that enters the run... or anything I throw to them...
... chicks come with a pretty sophisticated “firmware” preinstalled for this kinda thing...
... chicken in general do... this hen for instance, was raised in a plastic tub brooder and has never seen a chicken older than herself... but she’s preprogrammed to be a chicken momma ...
It is pretty amazing!! Mine were starting to scratch around/forage and even trying to dust bathe at like a week, week and a half old. And they’re entirely brooder raised, never seen a mother, and at this point they had never even seen another chicken because I hadn’t moved them to the outside brooder yet. So they didn’t learn from the bigs. Just instinct. The instincts sure are amazing.