That would depend on whether or not they retained their human capacity to reason. If I were turned into a bald eagle, I would find a way to make the best use of my wings, beak, and talons to gather resources, augment my natural abilities, and do the same for my comrades in arms. (or rather, wings) However, I highly suspect most people would freak out and try to find a way to turn back or just fly away from the situation altogether.