Much of the blame for the spread of the virus across the world has been placed on wild birds. Because poultry on free range and backyard farms could potentially come into contact with wild birds or their droppings, these farming types are an obvious target for blame. Many countries have periodically ordered their free range flocks indoors - among them France, Germany, the Netherlands, Sweden, Slovenia, and parts of Canada and Norway. A further intensification of the poultry industry has been put forward as the solution to the problem, on the rationale that keeping birds indoors in confined.
