The rarest most expensive chicken and are pure black in and out here some info on them;
Carcass colorure black
Plumage colorure black
Temperament:sweet and affectionate
Eggs per year:60-100
Here's a rooster:
An interesting pic:
I hope you liked my article if you feel this information isn't accurate I'm sorry I don't own any just read about them have a nice day and thanks for reading!