I have 5 hens currently (I forget exactly how old but about 1.5 years old): a RIR, Black Austrolorp, and 3 Golden Comets, all of whom were raised together from a day old. A neighbor has a Bantam Polish that she offered to give us since she doesn't want to restart her flock until fall and the Bantam Polish (also 1.5 years old) is the only lonely chicken left. I would love to add to my flock, but I'm concerned about how adding a small chicken to an established flock of large chickens will play out, especially since bantam polish chickens can't see as well with their crown of feathers and the neighbor says this hen is passive, docile, and very sweet. How likely is my current flock to pick on this bantam, given that they are all bigger than she is and a more established flock? If I tried, what would the best method of introducing them and integrating her into the flock be?