I live in a standard residential neighborhood and have a flock of 9 birds (one OEGB Roo and 7 standard size hens and one bantam hen). My back yard is 70 ft wide by roughly 30 feet or so deep. I really would like to get maybe 3-5 more birds to add to the flock. We really love our chickens and I think our family has a little more love to share. Would that be too many birds in our yard? Our current flock has a 8x8x12 coop and run with the coop being 4x4x8. They spend time freeranging everyday. I have a couple of other unused pens and would like to put them to use for more eggs and let's not kid ourselves, chickens are great. I just don't want to add any if it will present a problem. Thanks in advance.