raven one-line art, crow hand drawn continuous contour. doodle, sketch style, minimalism. croaking ominous prophet, of

art artwork beak bird black blackbird carrion claw contour corbie crow crown decorative doodle drawing drawn elegant feather gothic graphic grief halloween hand horror icon illustration isolated line minimal modern mystical ominous one ornithology outline pencil prophet raven simple single sketch smart telling trendy vector wild wildlife wing wings wisdom