I currently have five pullets, 13 weeks old. I recently lost one due to unknown reasons (no obvious signs of illness). She was the smallest and the lowest in the pecking order, and never really grew at the same rate as the others. I'm sure these were contributing factors. My issue is, I want to replace her. I have found someone that has a pullet about the same age (16 weeks) for sale. At this age, do I need to worry about issues with introducing her to my flock or can I just put her in and not worry about it? All of my birds are very docile... 2 buff orpingtons, 2 black austrolorps, and 1 silver laced wyondotte. The "new" girl would be a chocolate orpington. I'm not really in a rural area and don't really have a seperate coop/run area so not sure how to manage the process.