This reminds me of being told dogs don't feel emotions by someone who never owned one. Parrots most definitely can talk. Their language is extremely primitive but if you've ever been around a grey and it's owner for some time, they definitely talk to each other. The parrot will readily communicate observations and desires.
Isn't that what humans do too? We mimic noises we've heard before and we associate meaning to the noises. Parrots can do that. Our quaker parrot would bite you, then say 'not supposed to bite'. He clearly associated some kind of meaning to that phrase.
Not to make an argument against parrots understanding, but humans understand noises before they mimic them. Children are often able to learn and express themselves in sign language (if taught obviously) earlier than they can learn to speak, and they can respond to spoken word in sign language before they can speak.
Common misconception. Parrots are much more than just mimicry machines. There is also Apollo the parrot that shows this in detail and following from Irene's research with Alex
Bumblebee (the Transformer) might have an objection here. Purposeful mimicry can be used for talking on certain complexity. It does not have to be human-level to be communication.
I mean, isn’t that just what you’re doing too? If you see a cow, and you’ve been taught that ‘cow’ is the sound that describes a cow, don’t you say “cow?”