I really doubt this is a serious bird flu risk. Transmissions in Asia have mostly occurred with high densities of both bird and human populations packed together. A few chickens in a town of 2000 isn't terribly similar - as long as nobody's planning to catch them and eat them undercooked.

Well, at least from the description it sounds like the critter was used for meat - which to me makes it a bit more defensible than just shooting it for "fun". All the better if you're reducing an ecological problem at the same time.