I have 14 8 week old chicks that I have had since they were a day old. They are in a coop with a 16x20 fenced, covered yard. Not sure if it matters, but in case it does, they are: 3 Barred Rocks, 3 Delawares, 4 Cuckoo Marans and 4 Black Sex Links. I brought home 5 chickens the other night...all Orpingtons (which I have read are docile and usually at the bottom of the pecking order). Four hens and a roo...all 1 year old. I have the new ones free ranging the pasture, and they go into our "makeshift" coop and yard at night (it's a 6x6 dog kennel and dog house attached to the outside of the kennel). Once I plug a few holes where the chicks (my original 14) might be able to get out, I would like for them all to free range together during the day. Plausible? In a large pasture (about 150x150), would the older chickens pick on the little ones? Thanks for any help!