Hello, my chickies are roughly 5 weeks old. They're getting to be pretty good sized, there's 13 of them in a 4x3 foot brooder. 1) I have been giving them this chick starter.. Start N Grow I think it's called, medicated. Should I stop giving them this type of food, and if yes what type of feed should I move on to. 2) I think they have most of their feathers but this is my first time around so I'm not exactly sure what a fully feathered bird looks like, but they are lookin pretty good. I live in the Pacific Northwest, outside Portland, Oregon specifically. It gets cold and rainy here a lot, is it too soon to move the girls out into the coop? They've spent most of their lives under a heat lamp. 3) I know one of my chickens is a rooster, I'm thinking I might get a second rooster. Only one rooster per flock? I have 13 birds. Thank you.