Does chicken that eats from the wild—meaning it eats from sources whose origin is unknown—fall under the ruling of lahm al-jalalah (meat of an animal that feeds on impurities)?

Chicken that feeds in the wild is not subject to the ruling of Jallalah (filth-eating animal), nor are other birds and animals if they roam freely in the wild and what they eat is unknown. Therefore, it is not considered impure, and eating its meat is not disliked, because Jallalah refers to an animal that eats impurities and foul things to the extent that its meat changes.