His idea is eugenics but for chickens. Just let it spread it through all the birds and the ones that get infected will die and the ones that are immune will survive and breed and the chicken race will be stronger for it.
That'd be great if the viruses weren't also using accelerated evolution to become far more adept at infecting targets. By allowing the virus to spread unchecked, the chickens become a brilliant breeding ground for the virus and we're more likely to just breed stronger viruses (quite likely to be less virulent to chickens so that they can spread further, but also far more likely to jump between species).
Yes the idea is that birds that recover from bird flu will keep producing. You end up with more live birds than culling entire flocks. Some of the birds survive, because of their genetics.
