I was just playing the 'Smuggler's Alliance' level, and found out that the birds of Naboo appear to have shielding technology.
Toward the beginning of the level, right after you save the first homestead, you come upon a second homestead under attack. There is some kind of bird flying around there that I chased for about five minutes on a heavy STAP. I nailed that sucker twice, and each time the shot glanced off the bird as if it had shields like the droid fighters.
How can this happen?
"Beware the bearded one."