AsianAvian Birdflu

[John M <***>]

To all listers experted in envirobiology,
zoocomplexity and other relational mental brilliance,

here is a question:
We all can't wait until the avian flu decimates us.
OK, we eat infected chikens and thus ingest the virus.
So WE beciome sick. We then sneez, kiss and caugh on
each other to spread the deadly virus. But:
How do birds become sick?
They don't sneez, don't caught, don't kiss and don't
eat each other. Cows got the madness by grassing on
infected pastures on what mad cows devoured before
leaving their saliva on the remnant blades of grass. 
Birds don't graze. Birds eat in their privacy: find a
grain and eat it. They don't bother about the
excrement of other birds either. And feather is a good
protector.

Insects, Maybe? but in that case insecticides could
save the world? A flee-safe henhouse? Any ideas? 
This may be a life-complexity question.

John Mikes