I was being fuzzy with my language. Between 5kya and 3kya [1], the domesticated chickens that began their journey in mainland Asia ended up as part of the standard toolkit of the Melanesian and Polynesian people that spread widely throughout the Pacific. If any of those chicken strains remain, they might be genetically unique compared to what we find in mainland Asia today.

I'm interested in the origins of domestication not returning to some form of pastoral idealism. I need to strike "diversity" from my vocabulary. I should have said "interesting genetic variations".

[1] https://en.wikipedia.org/wiki/Polynesia#Origins_and_expansio...