I'm no expert, but last year when we got our babies at 2 days old, I held them a lot. When they were big enough to go to their run, I spent a good amount of time in there with them! I held them all!! When they were old enough to free range, they wouldn't follow me around, but they'd still come and visit me! One would jump up on my back if I was down on my hands and knees working!! She loved it!! (so did I!!)
Now they are over a year old, and I have one that doesn't mind being held. The others not so much. We have 2 roosters...one will draw blood from my husband every morning! He's done that to once in awhile. I think it was because I was a sweet mama to him when he was just a young one!! Before I knew he was a rooster!!!!!!!!LOL