[update]

apparently, turkeys have a pretty understandable language. There's a documentary, My Life as a Turkey [1]; he was able to decipher what each call meant (e.g. which squawk meant "snake" and which one meant "eagle"). So, if you were walking with a turkey, and you saw a snake and wanted to warn it about it, you could, in theory, communicate with it.

[1] https://www.pbs.org/wnet/nature/my-life-as-a-turkey-introduc...

[CyanBird]

And these probably would vary by region, just like how whales, dolphins and orcas have different languages too

That's really cool, I didn't knew turkeys did that