Gwyntaan's flight pattern faltered at the sound of the shot.  What was that human - oh.  The scuttling movement and the copper-sharp scent of blood drew him like a beacon, and he swooped down at the creature.  The fact that it was rat-like made little impression on him - it was prey.  He aimed for the swift kill in the middle of the back, much like the hunting birds of the world they'd left behind.  His sharp fore-claws were poised to clasp and hold in case the impact didn't quite finish his quarry off.  A quick snap of his jaws would grant the coup de grace.