Long story short.. Before today, I had 2 chicks at 5 weeks, and 2 at 7 weeks in a pen/brooder inside the garage with a lamp in the corner. I wasn't going to move them outside into the coop until the young ones were 8 weeks old (3 weeks from now) So today, I happen to be in the area of the local hatchery, and came home with 3 more 9/10 week chicks. I've been waiting to use my coop... And knew the new chicks could handle it. I've been really paranoid moving the chicks outside. Felt like 8 weeks was the sweet spot to move outside. Last week I let the chicks play in the yard midday during the weekend for 2-3 hours at around 80-85 degrees. The next morning I had 2 lethargic chicks... Got them Sulmet and kept them warm and lost both. :-( being new to chicken, it broke my heart....so I told myself not to let them out until 8 weeks. Couple of questions... How and when do I assimilate the 2 groups? Group 1: 2 chicks at 5 weeks and 2 chicks at 7 weeks in the garage. Group 2: 3 chicks at 9/10 weeks in the coop outside. Should I... Move them all into the coop (though I think the 5 week ones are too young)? Move the 7 week ones into the coop with the new ones and leave the two 5-week ones in the brooder until they are 8 weeks? Leave group 1 in the garage and leave group 2 in the coop... Assimilate when the youngest ones are 8 weeks? I hope I make sense. What's the best combination assimilate?