A stuffer chute assembly including: a curvilinear duct defining a passageway, the duct having a lower inlet opening and an upper outlet opening, the duct including a lower surface with plural slots located proximal to the upper outlet plural rotating devices arranged transversely across the duct, the plural rotating devices extending at least partially both through the plural slots and into the passageway, each of the plural rotating devices including plural fingers along the circumference of the rotating device to engage crop material in the duct and a sensor coupled to at least one of the plural rotating devices, the sensor configured to sense a parameter corresponding to density of the crop material in the duct.
