When you first described the differences between their combs - great way to tell them apart! - I wondered, Well what do chickens do about the varying combs in their appearance, does it become a problem because they look so different from each other? My birds notice the tiniest things about appearance. Maybe BECAUSE they are all so alike? It's mostly little pecks, especially if some dander or something has landed on them, so it's like grooming pecks. Once I did see one go after something around the other's beak and eye. So much so that the peckee kept pulling her head away and then finally down, and got a peck on the back of her head for that last move so she walked away. First time seeing that. I think that was a dominance thing. Something different, or is it all tied together?