The pecking order is an adaptation by the chicken to the unnatural conditions in which it is kept. Where there are many hens to a single rooster the hens have to compete with each other for the attention of the rooster. The rooster only has to compete with other roosters. The roosters strategy will be to drive the other rooster away from the flock. The hens on the other hand form a social order in which they all exist generally peacefully without driving out any particular individual and establish a hierarchy; a pecking order as we have called it. It exists to reduce conflict among the hens. The rooster is outside this order.I’ve had a bantam rooster not be in total control,only because I had two New Hampshire hens who were extremely aggressive.All birds are part of the pecking order and if you get too personal with some birds, you will be too.A bird about a year, is likely to still be very dominate a bird 4-7 months I’ve noticed are still pretty silent and usually still working up in the pecking order.
The 'natural' order for even semi domesticated chickens is the family unit comprising a male a female and for a period their offspring. There is no need for a pecking order in this natural arrangement and the rooster has had no need to make this adaptation.