Silkie (烏骨雞), meaning 'black-boned chicken'. Melanism which extends beyond the skin into an animal's connective tissue is a rare trait, and in chickens it is caused by fibromelanosis, which is a rare mutation believed to have begun in Asia. The Silkie and several other breeds descended from Asian stock possess the mutation. Disregarding color, the breed does not generally produce as much as the more common meat breeds of chicken. Silkies lay a fair number of eggs, of a cream color, but production is often interrupted due to their extreme tendency to go broody; a hen will produce 100 eggs in
Silkie oz) (12in)and for the female, 907 g (32 oz)(10in). The "Australian Poultry Standard" and "British Poultry Standard" call for Silkie bantams much smaller; in the Australian, the standard weights are 680 g (25 oz) for males and 570 g (20 oz) for females. The British standard weight for bantam Silkies is 600 g (22 oz) for males, and 500 g for females (18 oz). Silkies are also known for their polydactyly, usually manifesting as an additional 1-2 digits in the foot. The genetic cause of this extra digit formation has been shown to be a SNP in a regulator of