Raddix reminds me of
Maddox but more rad. I can imagine a sci-fi inspired metal band with this name.
Cardinal would be cute if it were just the bird, but there is also the Catholic clergy and cardinal sins, which is weird and emo. It isn't an awful name, and I like it better than
Dove, Toucan, Mallard, or Crane. But I like
Robin, Hawk,
Raven or even Finch better.