yea i do the same with mine, they roam free in the garden during the day and have a protected outdoor and indoor area so its basically a large playground for them and still the behavior you mentioned is what i see as well. also chickens in the wild? the measures i had to take to keep my chickens safe from foxes, martens, cats, dogs... is just crazy, they have zero defense capabilities so i dont know how they survived ubtill we kept them as livestock