[_understood_]

As I understand it there are even sub-dialects for each of these bird calls/songs. The example shared with me was compared to the English language in the U.S. where you would expect to hear stark differences in the southern states vs the New England area with a greeting like: "hey ya'll".

Unfortunately/fortunately I can't get the visual out of my head of a southern speaking crow looking for trash near my house now.....

[state_less]

There is cultural transmission between animals too. Like here is some whale song spreading from Australia out into the Pacific.

https://youtu.be/P99CR4y-TYw

She looks like she is delighted btw.