people speak thousands of languages in the world today, and the same goes for the bird world.
each bird speacies has effectily its own languages,
and there might be similarities between some languagegs just as there are in the human world, and then other languages that sound extremely different even though they're conveying extremely the same meaning.
In fact, some birds are known to pick up on the languages of other species.
In particular they've learned to detect the danger by eavesdropping on the alarm calls of the birds.
how that learning occurs? So they first played an alarm call that fairy wrens, in australlian bird, shouldnt be familiar with. A computer -generated the alearm call <<synthetic call>> meant mimic the birds. As expected, the unfamiliar sounds had no effect on the fairy wrens.
But then the researchers paired the synthetic call with the a chorus of alarm calls the wrens would recognize.
And the after the training, the sound of the initially unfamiliar synthetic call alone, was enough to send the birds ducking for cover.
The results are in the journal current biology. A says the study shows birds can learn from their peers without ever seeing them, or predator either.
https://www.scientificamerican.com/podcast/episode/birds-learn-safety-from-other-kinds-of-birds/
