i am pretty certain the color of a cardinal robe is crimsom..
and the bird is named for the color of the robes.. and there really isn't a cardinal red--but RED birds called cardinals.

crimson like scarlet, and a whole bunch of other red words are facinating--at least they are to me.. i once posted everyday on another red work (crimson, scarlet, cinabar, cerilian, etc.. ) and while the post were read.. no one seemed much interested.. it's an old thread (more than 3 closer to 4 years ago now.)