Keeping bird flu away from your backyard chooks

So far, there are two confirmed cases of a new strain of bird flu on Australian shores. While the headlines about H5N1 bird flu have largely focused on the poultry industry, this has the potential to inflict damage to Australian animals broadly, including your backyard chickens.The RSPCA estimates that Australians keep about 2 million domestic chickens, so how do you keep your hobby flock safe?