OK, so I'm planning to add 2 new hens to my tiny flock (was 3, now down to 2 after Olivia's untimely and sad passing ). I was at the home of my client who raises chickens the other day, and I choose 2 pullets. They are 5-6 weeks old now. Obviously if one or both turn out to be roosters I'll have to re-choose, but she thinks these are hens. I can't take them for a month and then they will be in quarantine for another month, so by the time we're done w/ that they will be 3.5-4 months old. Is that a safe age at which to put them in w/ my 2 adult hens? They're VERY cute. Bianca is a mostly white Brahma X and Audrey is all black. I didn't have my camera, alas, but I'll try to get my client to take some pics. We put zip ties on their legs to distinguish them. They are more friendly than some of the others b/c that clutch was fostered out for a few weeks to a friend of hers w/ children so they were loved on and handled. You could tell the difference just picking them up. Audrey actually sat on my lap while I petted her after I had released her for several minutes, apparently perfectly content!