This did happen to us. We asked the neighbor to come look at our problem with roaming chickens and a turkey. Upon refusing to do anything saying it was OUR problem, the next time they were in the yard I let a shot from the shotgun off which was a warning shot but it took that to get her serious about keeping them in her yard (and she used my easy fix). She also called the sheriff who paid us a visit and could only tell us to be careful as it was a legal shot!! Good chicken fences make good neighbors, haaaa!
I live out in the country one roster decide he like to travel several hundred yards and stay in my Neighbors pole shed.
I told the neighbor eat him next time he came over.
Well the neighbor seem a bit reluctant to do so.
Off with that chicken’s head it was made a fine stew.