How to safely introduce my 4 week olds with my 6 week olds?

[TheFunkyChicken]

Hi...This is all new to me.I bought 15 chicks to start with...at about 3 weeks old I added 5 new chicks to the brooder.The following week I added 4 more new chicks..(I think I have a new addiction!)They all got along fine even though it was a little cramped.One week later I moved the original batch to the coop.They have been in the coop for 2 weeks,they are now 6 weeks old.Today I tried to add the other 4 week olds and they were beating the chicken poop out of them...some were nice but most weren't so I removed them and put them back indoors in the brooder.Should I put the brooder (which is a dog kennel) in the coop for a couple days or weeks?I really want this flock to be all together again!

 

[TigerLilly]

Putting a crate/dog carrier with them in it & putting that in the coop is one way to do it.
You can also re-introduce them at night see how it goes from there. There is going to be a certain amount of fighting while they straighten out the pecking order. As long as no one starts bleeding, let them work it out.