While the price varies, a high-quality Ayam Cemani can sell for over $6,000, and a single egg can fetch as much as $16. But what makes these chickens so special? And why are they so expensive?

A chicken's diet also affects the color of the yolk. Marigold can cause the yolks ... of the most expensive chicken on the planet: Ayam Cemani. This chicken is jet-black from head to toe, and ...

A charity farm says it is "over the moon" after one of its stolen chickens was found in a park ... including an all-black Ayam Cemani. While seven others remain missing, the "rarest" was spotted ...