I used to trap and shoot Possums when I was younger, sleeve skin them and drop smoked skins at a railhead for pickup. It was really good money and helping the environment then the bottom dropped out of the market when the Greenie Eco-terrorists and 'animal rights' activists started bleating. None of those idiots ever saw the devastation wrecked in the bush and on the native fauna by the pests.
These days the money is in the fur, about NZ$90 a kg which is about 15 - 18 Possums, raw skins are $8 - $20 for an A-grade black which is way down on the 1970's prices.

Not chickens but interesting as the technology developed out of chicken pluckers.