What part of the world are you hailing from, birddish? Bird flu is more prevalent in Asia than is North America, for example. Also, is your bird ever in contact with wild birds? Is your bird ever exposed to domesticated poultry? Do you visit areas where the bird flu might be more common? Do you come in contact with wild birds? If not, I'd say the risk of your or your bird contracting bird flu is very slight.
So far, avian flu is not showing any great facility at crossing over to humans.
As to giving Tamiflu...birds are very sensitive to many chemicals and drugs. I wouldn't risk giving him anything without a vet's advice...and certainly not try any medications on your own if he gets sick. The wrong meds could kill him quickly, especially if he's already sick and stressed. Remember that birds rarely show signs of being ill until they are really in a bad way. So if he starts to show any symptoms at all, a trip to the vet is a good idea.
