s > z

[Prof. Roly Sussex]

I think this is also a feature of West Country UK dialects -
Somerset, Cornwall, perhaps Dorset. I remember stereotypical
rustics from the West Country in radio serials like "The Archers
of Ambridge" (ever went to air in the US?) talking about the
"zons of the zoil".  Should be in the Trudgill and Hannah book
on "International English".

Roly Sussex
The University of Queensland