The BBS males over a pure barred female will make sexlinks, though it might be hard to tell for the blue or splashWhat sex-link (or continued breeding towards autosexing) options are available with the following breeds:
BBS marans
BBS Australorp
Isabella Leghorn
Cream legbar
Opal Legbar
Silver Bielefelder
Isabel Ameraucanas
Speckled sussex
Red orpington
55 Flowery
Welsummer