I have several breeds of mostly pullets, all the same age. In the past few days, I've noticed their faces, incl. wattles and combs are starting to darken. The pullets have a long ways to go in terms of comb and wattle growth, it's just the color that's deepening. Some have turned pink, others are almost red. I thought this would happen closer when it's time to lay, and thought I read somewhere they might need a lower protein ration. Otherwise, everyone seems to look and act normal. I am feeding starter/grower crumbles, occasional treats, and whatever they dig up in their yard. So do I need to adjust their feed or it is normal for color change to precede comb and wattle development?