I'm not the person to asking about purchasing stock as I raise all my own or get adult stock to raise the future generations.
Thanks for clearing things up.
Since they are all young you can begin to integrate with around 16 weeks of age with no problems. They will have to work out the pecking...
You need them separate for more than a couple of weeks.
2-3 week old chicks are way to small to be placed with strange pullets. I would not integrate them until those youngest ones were quite a bit older: 16-20 weeks.
Honestly, and this is just me; please understand that.
I would never put...