Professor Wells confirmed Green's observations, explaining: "This phenomenon is well attested in birds. You find distinct chirping accents in the same species around the country. In small populations such as herds you would encounter identifiable dialectical variations which are most affected by the immediate peer group."

https://www.theregister.com/2006/08/23/cows_have_accents/

[–] Johandea@feddit.nu 8 points 1 year ago* (last edited 1 year ago)

This is one of the most underrated abilities. I advice everyone to do this:

Pick a bird that is common in your country or other areas you visit. Learn it's song. Soon you'll start to hear it everywhere and begin noticing variations around different locations. I did this with the chaffinch.

It's really funny to hear their dialects. Now, I'm definitely not skilled enough to pinpoint a bird based on its accent. But I do notice differences and it is thorough enjoyable, every time.