Cindy in SD - it was probably a combination of your techniques, but definitely adding more is better. Personally, I have had very good luck getting chicks at 4 weeks integrated into the flock. So integration is not an issue for me. I am just curious why she would sell the entire flock at one time.
Cindy in SD. I have never done this, so just passing on this idea. But when learning how to do the capon, a person on here, said at first he practiced so to speak on a culled chicken, just to figure it out.