Great overview of more complex vocal communications. Farley Mowat makes a similar case for wolves in Never Cry Wolf: https://en.wikipedia.org/wiki/Never_Cry_Wolf
And almost certainly: cetaceans too.
Does anyone know if a tokenization attempt has been made at this type of research?
Well, it apparently has one error in the first sentence. I wonder how well the rest of it stands up to scrutiny?
According to Wikipedia, the live in the Democratic Republic of Congo, not the Republic of Congo.
If anyone is interested more in Bonobos and wants to learn more about that species and the way that species connects with humanity I suggest the following book:
https://www.amazon.com/Our-Inner-Ape-Primatologist-Explains/...
I read it many years ago and thought it to be excellent!