How long does it take for hens to adjust to one another? I now have 12 pullets that are 6 weeks old. For a colorful egg basket I wanted to add a welsummer and to add the color of white to my flock i wanted to get a columbian wyandotte. I wont be able to get the new chicks for 3 to 4 weeks and then they have to be in their brooder for awhile. How hard is it to make this happen without bloodshed or torture?