I have 4 chickens 2 RIR and 2 Buff Orpington. 3 of the chicks have started laying about a month ago. The one who hasn't started laying has small waddles and a small comb. The comb has turned somewhat dark red but not like the others. She started out kind of in charge, but now she isolates herself or vice versa.
Should we be concerned? Could she be a he? Upload pictures in a moment