HollowOfWisps
Previously AstroDuck
That is very interesting and informative!You probably did not see that Mike Rowe "Dirty Jobs" episode on catching feral chickens in Miami. He did not catch all of them, several were left to breed.
I'll include a link to an article about them. While most of these are in warmer states, New York is not exempt. They can survive in colder areas. Several years ago a member told of a feral flock on the Michigan Upper Peninsula.
https://www.hobbyfarms.com/how-to-get-rid-of-feral-chickens/