We have 12 chickens, all 7 or 8 months old. They have a large, walk-in coop and almost 800 square ft of fenced in area that they share with 3 ducks. They eat Purina Layena mixed with a 20 to 1 ration of oyster shell, get fresh grass & weeds every day and treats of sunflower seeds and mealworms. They all seem happy & healthy as our 6 red chickens layer 6-7 eggs a day and our 6 white chickens lay 5 eggs a day. But 1 of our white chickens has a light-medium pink comb, not red like the others. This is not something new, it has always been this color. She seems healthy in every other way, no parasites and is eating well. Is this something I should be concerned about?? Thank you for any help. We are 1st time chicken owners and are still not sure if we are doing things right.