Hi everone! My first post and my first journey with chickens! I purchased 9 day-old layer chicks from a hatchery and got what appears to be an unexpected rooster in the mix. They are all 16 weeks old and the cock-a-doodle-doing seems to be the validator! It is coming from the Dominique. Anyhow two questions: 1. How can I tell if he/she is a rooster? I ask because when I googled this question, some info states that a hen can put herself in the lead position and even begin to crow! 2. Most importantly, if it is a rooster he's not aggressive (maybe it is too soon?) and I was thinking of keeping him. Egg production is important so I would like to know if a rooster increases or decreases the production rate. They have a coop and a run. The run is about 6' x 12' and I let them free range for a couple hours most everyday. Thanks for your responses!