No, not a roadkilled porcupine! The answer to yesterday's Fabulous Prize question was: Baby Robins.
I'm not sure if the feathery stuff grows out of those quills over time, if they're just sort of wrapped up and will unfurl, or what. Perhaps, if Momma Robin doesn't get too aggravated with my poking the camera into her nest, we shall find out. Good thing they aren't kingbirds!