Welcome Nice to have you here! You already have some good information in previous posts. Make sure you have water and feed in different locations so the little ones have a better chance to eat and drink
Introducing new groups of chickens can sometimes take several weeks, and sometimes longer to coexist peacefully. There seems to be more stress and drama when the birds are older or bigger. I've had very good luck integrating young chicks... I brood them in the coop within view of the flock, open small passages for the chicks at about 3 weeks old to let them mingle with the others, and by 4-5 weeks they're integrated practically unnoticed. I would highly recommend early integration if you ever decide to add more in the future. Integrating at 4 weeks old Start Raising Your Chicks Outdoors You Certainly Can Brood Chicks Outdoors Coop Brooder and Integration
Nice to have you here! You already have some good information in previous posts. Make sure you have water and feed in different locations so the little ones have a better chance to eat and drink
to have you here with us. Enjoy your time here at BYC! 
