Yes. Be very careful, do not leave him out unattended.

Okay, really, it depends on the size of the hawk, but as you cannot really measure them and inquire as to their individual strengths, I would be on the safe side and assume they could get him. Even if a hawk could not actually carry him off, the could do serious damage, with both claws and beak, if one managed to get hold of him.

Not a chance I would take.