Thinking ahead as I've got 4 chicks hatched 11/28/16 making them 3 weeks old tomorrow. In the coop I currently have 3 hens-1 Dominique, 1 RIR, 1 Australorp. The RIR is very much at the top of the pecking order and can be kind of a bully. The Dominique has a a personality but isn't overtly nasty and the Australorp is really passive. The 4 chicks are a Lavender Orpington, an EE, a SLW (who I suspect is a rooster), and a Blue Splash Ameraucana with a pretty serious case of scissor beak. I'm almost certain that I'm going to attempt the "playpen method' where they'll have their own space in the coop that the hens cannot access. After a period of time, I'lll give them semi restricted access to the run during the day as well. Likely by putting a dog kennel in there with chicken wire across the top half of the door so they can have a hiding spot that the hens cannot access. A safety room, of sorts. I use the Premier1 heat plate for my chicks. Obviously, they'll need supplemental heat for a while so the plate will go outdoors with them. Temps here can vary a lot during winter. We will have days in the 40's and 50's, even 60's and days where the temperature struggles to get above 0. It is a wide range. Wind chills can get down to -20 or -30 a couple of times a year. This will be my first time adding chicks to the regular coop as well as my first time adding chicks during winter. I have several questions- 1. At what age should I introduce them? My thought was at 6 weeks. Move them to the garage with their heat plate at 4 weeks, give them 2 weeks to adjust to the colder temps, then out to the coop. 2. My Ameraucana with scissor beak is doing great in terms of eating and drinking but is a little picked on by the other 3 chicks and I can only imagine what my RIR will think of her. Other than having multiple feeders and obstacles to run around is there anything else I can do? 3. How will I know when I can get rid of the heat plate? It will be a pain to move it from the coop to the run 2x a day. How will I know when they don't need it? 4. How concerned should I be if they're doing great at 20-30 degrees but we have a cold snap forecast where the temps won't be above 0. Do I reintroduce the heat plate? What if they're no longer segregated from the adults at that point? Sorry for so many questions, I'm trying to plan for everything as best I can. I wouldn't worry as much if I were home every day but there are days I'm out of town for work and my husband will have to make judgement calls-we both need to be on the same page. Thanks, as always, for all of your help and expertise.