Oh the joys of interspersed white hairs! I purchased a new mare this weekend who displays some lovely collections of colors. She is a Shire, a breed known for rabicano traits, but through the 1950s, heavy mixing with the clydesdale also threw some sabino genes into the mix. Most people call her roan, but roan is not a trait I have heard of in the Shire breed, and her coloring is not even enough for a roan. Her grandsire has a silver tail, a definite rabicano trait. I'll try to get pictures Tuesday, but until then, we're going off of description and what photos I can find online. My question is, is she sabino or rabicano?
Her base coat is a deep bay; while her entire body, other than head and legs, has interspersed white hairs, the degree varies by location. Her right flank and on to her hindquarters is heavily roaned, I'd say almost half of the hairs are white. She has some white hairs in the top of her tail (but not a stand-out amount), as well as an entire section of white in the center of her tail. She also has concentrated white specks on her chest and throat. She does have high stockings on her hind legs, almost to her flank. Her front legs are white at the bottom, but the white becomes streaks up to her knees. Her face has a blaze/apron, not over her eyes, but pitching off the side of her jaw mid-nose, and then the white goes up under her jaws to her throat, though the side of her cheeks is solid bay. I generally associate sabino with jagged markings, and although she has a lot of chrome, her face and leg markings are all smooth. She has roaning all across her neck, including her mane, which is not common for rabicano, especially since she doesn't have a heavy "silver-tail." She also has a small speck (about the size of a pencil eraser) of blue in one eye.