Is Cherokee the sire? I'm willing to bet thay they're both black "roaned sabinos" - which is not technically roan. It's VERY common in Walkers, and VERY often mistaken for true roan. True roans will have no white in their mane and tail or on their legs and face (except for white markings).
I don't see any obvious roaning in the foals coat, and I see a lot of white in his tail. I also see the same amount of white hairs on Cherokee's face as is on the rest of his body - which is not true of roans.
Add that to the fact that they are both obviously sabino and the chances that that's what causing the roany look are high.
Roaned sabinos: LocalHorse.com - Horse-Related Business Directory & Horses, Farms, Tack & Horse Trailers For Sale http://www.cloud9walkers.com/Reagan091509f.jpg http://cloud.equinenow.com/194827_1/grey_roan_blue.jpg
See how there isn't an obvious difference in color between the head, legs, mane and tail vs. the body?
Now look at the true roans: http://www.holmesfarmwalkers.com/ima...%20Man2004.jpg http://globalhorseculture.typepad.co.../blue_roan.jpg http://www.mountainviewwalkinghorser...Strawberry.jpg http://www.riseandshinewalkers.com/i...e/P7210095.JPG
Also, I don't know if there's an actual genetic explanation for this, but I've noticed that it's extremely
unusual to see a true roan with more than a small star or snip, and they almost never have white leg markings.
If you really want to know, you can DNA test for both sabino and roan here: Horse Tests
But I would bet almost anything that they are both sabinos and not roans. The white hairs on Cherokee's face automatically disqualify roan. The gene does not allow white hairs on the face (except for white markings).