You think to yourself, I'm not sure how I became a woodpecker, but I'm still a man's soul, and any man with a true concience would never allow harm to come to a beautiful pregant woman.
You calculate your trajectory in a nanosecond and dive bomb the mugger. Though aiming for his eyes, he ducks, and instead your claws leave a Bruce Lee movie scar on his chest.
He ponders his actions, he's just been clawed by a friggin woodpecker for cripes sake. Hot pregant babe with big purse or not, he makes a run for it.
Hot pregant babe goes to kiss the woodpecker (that's you) for saving her.