I have two sets of chicks raised with broodies. One set is 5 weeks old, and one is 5 1/2 weeks old. Right now they are with their mothers in a separate coop with a small 8' x 8' run that shares one side with the main chicken pen. I also let them free outside the run in the afternoons if I have some time to sit and watch them.
(Photo below - They are in the white coop with the shorter fence in the photo below. The area with the hoop shade their run adjoins is the main run, and the bit of green you can see to the left is the main coop.)

There are a few squabbles between the mothers - after all, one has to be alpha in every setup, but nothing bad. Early on I had one chick get pecked that drew a bit of blood, but nothing since. I know the time will come shortly when the mothers start trying to distance themselves from the chicks or even reject them all together.
Important side note - I have more chicks due to hatch at the end of this week with another broody. I'll keep them inside the first 2 weeks, but then I'll be looking to move them out into this coop - so in about 3 weeks from now.
So, here's my quandary: Do I let nature take it's course and wait until the mothers start rejecting the babies and then move the mothers over into the main coop or do I need to move them all together so that the mothers might protect the babies a bit when they enter the new pen? They're pretty used to everyone now since they've shared a fence for a few weeks, but I know it will be a bit different when they actually are all in the same pen.
If I move the mothers separately, I'll let the current chicks stay in the separate coop and get a bit bigger. The mothers do have to be out, though, before I move the new mother and her chicks out in about 3 weeks. I suppose I'll just have to see how it goes if I were to leave the older chicks in with the new mother and babies. If there is too much conflict, they can be moved to the big pen - they should be about 8 weeks old at the time, and it will be 9 of them at once.
So, what would you do? Move mothers separately back into main coop, or move them as a unit?
(Photo below - They are in the white coop with the shorter fence in the photo below. The area with the hoop shade their run adjoins is the main run, and the bit of green you can see to the left is the main coop.)
There are a few squabbles between the mothers - after all, one has to be alpha in every setup, but nothing bad. Early on I had one chick get pecked that drew a bit of blood, but nothing since. I know the time will come shortly when the mothers start trying to distance themselves from the chicks or even reject them all together.
Important side note - I have more chicks due to hatch at the end of this week with another broody. I'll keep them inside the first 2 weeks, but then I'll be looking to move them out into this coop - so in about 3 weeks from now.
So, here's my quandary: Do I let nature take it's course and wait until the mothers start rejecting the babies and then move the mothers over into the main coop or do I need to move them all together so that the mothers might protect the babies a bit when they enter the new pen? They're pretty used to everyone now since they've shared a fence for a few weeks, but I know it will be a bit different when they actually are all in the same pen.
If I move the mothers separately, I'll let the current chicks stay in the separate coop and get a bit bigger. The mothers do have to be out, though, before I move the new mother and her chicks out in about 3 weeks. I suppose I'll just have to see how it goes if I were to leave the older chicks in with the new mother and babies. If there is too much conflict, they can be moved to the big pen - they should be about 8 weeks old at the time, and it will be 9 of them at once.
So, what would you do? Move mothers separately back into main coop, or move them as a unit?