Saw a strange black bird

During my run I saw a big black bird walking by some bushes. It was about the size of a small chicken, but it didn't look like a chicken. The body and legs were pure black. It had a small red comb, and there was a large white spot on its neck. And, it had a fan-tail. Not a fan tale like turkeys have that span 180 degrees, but a fan-tail that spanned about 45 degrees. It had a small head, and I could hardly see its beak. At first I thought it was a pet chicken that had gotten lose, but when I saw its tail, I decided it wasn't a chicken.