Ok so I talked to my DH and we decided to get some pullets to add to the flock. I went to the feed store and bought some. They are about 4 days old. How do I add the chicks after the brooder? I was planning on adding them when they are fully feathered but I'm afraid that my roosters will kill them if I add them right away. My husband can put up a separate fence in the run (for 3 weeks right?) but what do I do at night? They all sleep in the coop. Do I gather them and put them in the brooder for 3 weeks? I need advice!