Psst...I was just kidding.
Yes, hens will start crowing sometimes but rarely. Sometimes it is in the absence of a rooster, sometimes their hormones have flipped and they start producing too much testosterone and they take on characteristics of a rooster along with the crowing. Some bantam breeds will do this more than others. The only crowing hen I had was a little Buff Sebright that was about a year old. I heard someone crowing in the cages where I had kept the bantams over winter and came around the corner to find it was my little hen. Not doubt it was a "she" because she laid me an egg every day. They were cute little birds. I had hatched from shipped eggs, but only got 2 pullets, so they went away to someone for fun birds for the backyard.
I sold some pullets to a guy one year and the next Spring he called me to say he thought he must have gotten a rooster from me after all because someone was crowing every morning. I had him send me pictures. There were clearly 5 hens, however, one had no feathers missing and the others were all treaded up like a rooster had been breeding them. I told him, the one that looks so nice is pretending that she is a rooster and even mounting the others. She was a gorgeous Blue Orpington. The next day he went out to spy on them, and sure enough, she was doing the crowing, but she also was giving him an egg almost every day. I am sure when hens do that they confuse the neighbors if they are in-town dwellers. I would love to see the looks on an anti-chicken person's face if their neighbor had a crowing hen.
