Besides silkies.....

[exsia]

PRETTY! ... well, she has nice form anyways

 

[Sonoran Silkies]

Silkies are the only black-skinned bantam recognised by the ABA. Cemani's are the darkest skinned chickens there are. Sumatras (bantams, anyways; I assume, but cannot verify that large fowl do also) have yellow skin. Their shanks and feet, however are black or willow, depending on variety.