? When can chicks move to the coop with modifications?

They will be fine with a heat light. I start mine off right in the coop in April before the snow is off the ground sometimes:>) I can't stand them in the house.
Oh just make sure they have a solid wall between them and the chicken door to protect from drafts. It doesn't have to be high, but give them something to hide behind if the wind blows in the chicken door

 

they be okay:>) the cardboard was a good idea

 

They should be fine! There's no reason for them to be in the house as long as they have a way to stay warm enough and draft-free.

 

We have what sounds like a similar coop setup. (Well insulated and draft free.)
We have one Delaware rooster and one all black hen who are both almost 5 months old. (no eggs yet) They have the run of the yard during the day, and come in at nght.
We also have 15 chicks (RIR, Delaware, Black Star, Red Star and Auraucana) who are all 3 weeks old today.They are just feathering out. Most of them are hens, but there are supposed to be 1-2 Roosters in the mix. I'm not sure who's who yet. (any hints on figuring this out?)
I would love to get these stinky little ones out of the house and into the coop. Any thoughts? Thanks.

 

Northern Wisconsin here and I just started 28 chicks in the main coop on day 3. We have had 5 nights already in their 16 days where the hard frost has settled over night. My ladies and 3 roos have been happy as a clown in the coop. IMO winter isn't going to get any better..get them out there. Last night the mercury dipped to 22 here. I look forward to sunrise as much as they do...like to see the new feathers they grew over night.

 

If you can heat their corner of the coop and stop drafts there's no reason not to move them out really early--I like to move mine out by the time they reach two weeks old--when I have somewhere to put them, which I don't right now so my craft room is covered in chicken dust--this coop *will* be done by Halloween, and my new hatches *will* be living there by then, lol

 

are any of you concerned with the way the older hens will treat the babies? Ive got 4 week old babies I would love to put in the coop also. Mine were very aggressive to some new older battery hens I picked up, they wont even roost in the coop, so Im concerned about my babies. Do they do the same to chicks?