I know my four chickens are still a few months away from laying their first eggs, but I'm tempted to think the one who already has a prominent comb and a bit of a wattle is most likely to lay first. Am I correct? Of the four, the Buff Orpington seems the most "developed", with the Delaware somewhat behind her. The EE and Light Brahma don't seem to be developing any visible comb or wattle. Or is it all just cosmetics?