There are a lot of phonemes in human languages that avians would struggle to recreate what with the lack of lips/teeth.
I'm coming back to this because most birds can't do what parrots and ravens can. So yeah, what would a bird language be? What would be their accent when speaking human languages? Anyone who's good at bird anatomy and linguistics could have a field day with this.
So I googled it, almost all birds have a syrinx, so the lack of lips, teeth, and pallette doesn't affect their ability to speak very much. I don't know why I didn't think about that at all.
