I thought that pullets are “girl chickens” while hens are “woman chickens,” and that cockerels are “boy chickens” while roosters are “man chickens,” so to speak, like this:
Babies: peeps (either sex)
Children: pullets (female) and cockerels (male)
Adults: hens (female) and roosters (male)
Those are the proper terms....OTOH some varieties are difficult to sex until they are mature....cross dressing and all;~)