Correct. Wild birds won't show signs of being sick.From all that I've read (and that's all I've done for hours...), it seems as though wild birds carry it, but it presents with fewer symptoms and with less severity. They can shed it through droppings, feather, and dander to poultry. The poultry, however, die from it. And vaccines seem to have caused additional mutations that effect kept poultry/birds because they are the animals who get vaccinated. In other words, bad ju ju.