system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How exactly does a parrot "speak"?

It's amazing...
gpt
Parrots have a rather remarkable voice box- they can make two tones at the same time.  They do not speak the same way that we do- with their tongues- but instead "whistle" all the things that they say.  The reason that they do this is because they want to talk to us- really!  Most talking training relies on the parrot wishing to have a strong bond with its owner.  Some parrots, like Alex, an African Grey, are thought to use words intelligently- they don't just mimic, but can have conversations and respond to questions and stimulus.