Hello! I am a total newbie! I have three 6-week old pullets that just made it into their coop this weekend. So far, so good! I have a bossy Americauna who is the leader of the "peck", a shy silver laced wyandotte, and a very curious and friendly Rhode Island Red. My coop and run is about 80 sq ft total, so I have decided to get another pullet. Yeah I guess the addiction has already kicked in! I want to go ahead and add a fourth now because I am reading all about how its traumatic and/or what a pain it can be to introduce a new single adult chicken. If I get a 4-6 week old pullet can I just add her to the coop and expect little to no problems, because they are so young? At this young age, would they peck enough to cause serious injury? They guy at the feed store said to expect no problems at this age, but I wanted to ask this board because they'd be in the coop all day alone while I'm at work, I don't want to come home to some pecked-to-death chicken! Please let me know your experiences and advice with this. Thank you very much!