While the term 'pygmy' is something of a generalized term for populations of unusually short people, it primarily refers to some equatorial African tribes. There are no recognized pygmy populations in Brazil, where this episode takes place.
If the rear propeller of a helicopter exerts enough force to blow the leaves off a tree along with two pygmies, it should also put the helicopter in a tailspin.
Just as in Pursuit of the Po-ho, this jungle tribe has no women.
On two occasions (approximately 18:40 and 20:40), Hadji's mouth moves silently.