Back in March my fiance surprised me with some new chickens since we had an animal kill off 4 of the 6 during the fall. I got 3 ameraucana's and 4 golden sex links. I have had no eggs from them and they should be laying by now. The older girls I had continued to lay and just recently stopped as well. Now my girls seem to be getting aggressive with the ameraucana's and have pulled feathers from there tails. I upped their food and treats thinking they were hungry and got a bigger water holder. I'm not sure what else to do. I do let them free-range for 6 hours a day now because I thought maybe they need more space and the run isn't big enough (10x16). My next step is making their coop bigger since they started to now sleep on top of it. This has all happened over a 3 month period and I'm running out of ideas.