I have seven 4 month old chickens of various breeds along with four older chickens in my flock. I am not allowed to have roosters in town, so I recently had to give away two of the 4 month olds who were bigger than the rest, had large combs and wattles, and were crowing. Roosters, obviously. A week later, two more of the 4 month olds started crowing. They have large tails, but no combs or wattles to speak of and they had previously shown no rooster characteristics. Then One mounted another chicken! Somebody please help, I really don't want to have to get rid of two more chickens!