All chicken have combs on their heads, but it does not always look the same. Comb is a fleshy growth on the top of the chicken head. Combs of different breeds may look different in shape and even in color. the most common variation is the single comb. most comb are red, But such as silkies, which have bluish black combs. Both male and female chickens have combs, but combs are generally larger on males than on females. While Combs are not just for the good looks. They actually have a very important role for chicken because they cool the chicken down. The comb is like a tiny radiator. Blood comes close to the surface at the comb and wattles and air passing over these helps cool the blood. The comb and wattles also act as attractants to the females.