When can I let my four-week-old chicks interact with my older birds? I first introduced them yesterday, with the chicks in a wire mesh enclosure. A couple of hens came over to investigate but they mostly just walked around the yard like normal. The hens and chicks all seemed fine being in the same space, the hens weren't aggressive and the chicks weren't terribly scared. The head hen did lightly peck most of the chicks when they were at the edge of the enclosure saying hi to her, the chicks became a bit more wary but didn't seem scared. I'll likely keep them in the enclosure for at least a few more days, but what would be a good indicator that I can let them out for some supervised free ranging time?