[The] Ayam Cemani Chicken is a rare breed of chicken from Indonesia.
The birds are completely black: black plumage with a greenish shine, black legs and toe nails, black beak and tongue, and black comb and wattles.
Even the meat, bones, and organs are black.
The cause of the unusual pigmentation is fibromelanosis, a form of hyperpigmentation.
Want one? Green Fire Farm in Florida will do better, and sell you a breeding pair for only $4000.
Via Viral Forest.