It's believed we lost control of our Species because of the small appearance of Bird Brains, multiple Brains dominated. If the Apes dominated why so many Planet of the Apes Films & only "The Birds" about an Avian problem.
Humans are not tolerated to live continuously for the same reason Celtic Countries deny England Crown popularity & finance. Living in the same "body" of Land Three Foreign Crowns would be disadvantaged.
Related: I know an old Lady who swallowed a Fly is about advances in surgical Appendages.
