Dark Bones Are Perfectly Normal — And Not Dangerous
Dark bones in cooked chicken are typically not a sign of danger. As mentioned, they are a result of natural processes involving bone marrow and are especially common in young chickens. This is a normal occurrence and does not indicate that the meat is unsafe to consume.

It’s important to note that as long as the chicken is cooked to an internal temperature of 165°F (74°C), it is safe to eat.