Is a cloaca related to peahen or peacock?

Neither. A cloaca is an anatomical feature found in both male and female birds, including peafowl. It is a multifunctional opening used for excretion, reproduction, and sometimes even mating in some species. Male peafowl, also known as peacocks, and female peafowl, known as peahens, both possess cloacas as they belong to the same avian order.