Poultry meat and eggs ... are safe, and the concern is to ensure that there is no spillover from wildlife to poultry production systems.
I think that wild birds may introduce the virus but it is through man and man's marketing systems (the poultry trade) that the disease spreads. It is also possible that poultry can transmit the virus to wildlife when they share the same ecosystem.
There are other ways diseases move around the world.It could be that wildlife introduced the virus, but through our own activities of commerce, the disease spread.