Hello, I preface this post with the disclaimer that while I have had parrots, I am new to chickens. I received my first batch of 5 chicks on Wednesday, the 31st of May and all seems ok (after I stopped freaking out about how tiny and delicate that they are...imagine cleaning their rumps without actually holding them...). I planned to get 4 more but was unable to order them due to availability. I placed a second order of 4 for a hatch date of June 4th which means that I will have one group that are 2 weeks and a second that are day old. I plan to keep them separated using a divider w/hardware cloth in the 3x6 ft brooder that we made. My question for this group is when might be an appropriate time to house them together without a divider? Please advise.