X. Barber, author of the book The Human Nature of Birds ​ — A Scientific Discovery With Startling Implications, states: “All thoroughly studied animals, including not only apes and dolphins but also ants and bees, have demonstrated totally unexpected basic awareness and practical intelligence. ”
Raamatu „The Human Nature of Birds – A Scientific Discovery With Startling Implications ” autor dr T. Barber ütleb: „On selgunud, et mitte ainult ahvidel ja delfiinidel, vaid ka teistel põhjalikult uuritud liikidel, kaasa arvatud sipelgatel ja mesilastel, on primitiivne teadvus ja praktiline taip, mida seni ei osatud aimatagi. ”