It's interesting to compare this "sound-talk" that parrots can easily accomplish with the obviously greater intelligence of apes, who can't reproduce human sounds, with the debate over whether chatGPT is intelligent or not. Note that Koko was obviously a greater communicator than any parrot ever was. Is mimicking human behaviour a necessary, or even sufficient, criteria for demonstrating cognition and intelligence?
> Is mimicking human behaviour a necessary, or even sufficient, criteria for demonstrating cognition and intelligence?
Depends on how you define them. We love to anthropomorphize everything. If an animal shows language comprehension, that's bigger than speech.