So, I am interested in incubating some eggs for some new chicks. I currently have 7 chickens, 6 hens and a rooster, but my coop is fairly small, with little grass space because they are free roaming chickens. But, I wanted to add three more chicks to the flock but I'm not sure how or when to. My chickens get territorial when ducks land in my yard, so I don't know if this is even a great idea. So, my main questions are, -When would it be good to introduce the new chicks/chickens to the existing flock? -How do I introduce them, anyway? -Is this even a good idea, considering my coop is small with very little outdoor space? -How old should they be when I introduce them?(My current chickens are about two years old) Thank you for any input, and any advice would be great! Thanks again.