St. Croix is a hair sheep that originated in the Virgin
Islands, where it is called the Virgin Island White. They are believed to
have descended from hair sheep of West Africa, but some think they are a cross
of Wiltshire Horn and native Criollo sheep. Most St. Croix sheep are white with
some solid tan, brown, black, or white with brown or black spots.
Both sexes are polled, and rams have a large throat ruff.
Exceptional parasite resistance compared to British sheep breeds has been
documented in studies at several universities. The St. Croix is classified as a
"rare" breed by the American Livestock Breeds Conservancy.