What I'm finding is the chicks raised with her have accepted Helen, the blind one. And chicks younger than her, love her (because she is quiet, calm and doesn't peck at them). Right now I have 4 adult chickens, and a group of youngsters (2 BLRW's and Helen (7wks), a welsummer (5wks), and 3 silkies (4wks)). I do let them out to free range when I'm around, but Helen and the silkies don't usually go out (their choice). If she is left alone in the run, then she does loud slow peeps, calling her friends. She does seem to be getting used to it, and will settle down and wait for their return. I'm thinking I'll make a permanent group of Helen and the silkies, and then try to integrate the other 3 with the adults, or I'll keep the youngsters as a group (because they all accept Helen). I may just decrease their free range time (so Helen isn't alone for as long), or keep one friend penned with her each day. I also don't really plan to free range the silkies, so she can hang out with them. She is really attached to the non-silkies though. I'm in the planning stages of a second run (the first one was too small anyway), and I'll probably save the older/smaller one for her and her friend(s).
I have discovered that she can see a little bit, and it seems to be improving ever so slightly. She can follow the red feeder, she targets my orange shoes (bee-lines straight into them), and she can follow me (if I go slow and she stays close). She is the absolute sweetest chicken ever. I do try to let her figure out things on her own and sort out her own problems. One of the times she came out, one of the older chickens pecked her and sent her running. She stood and peeped for awhile because she was lost, but she eventually found the run and got back inside. It is tempting to help her, but I want her to be able to live an independent life. I certainly wouldn't let her get into danger though. She does NOT fly and I'm not sure if she'll perch (I can't blame her). I move her stuff around all the time, and she figures it out, sometimes I'll show her once, especially if it is something weird (like the first time I hung the feeder instead of having it on the floor- she kept running under it). She has learned to eat treats (in a bowl) and knows to come running when she hears the other chicks get excited. She always taps the side of the waterer, and then takes a drink (chicken version of feeling her way around).
So, all in all, with a few accommodations I think she'll live a normal life. My only concern is that her friends may turn on her as they get older, but we'll deal with that when/if it happens.
Here is a video of her as a week old. She is eating raw yolk mixed with chick starter. You'll notice that she needed my hand to be able to stay pointing in the right direction. I also love her progressively closer pecking, to figure out where stuff is (she still does that).
http://s278.photobucket.com/albums/kk94/lemurchase/?action=view¤t=a8e2c25a.flv
http://s278.photobucket.com/albums/kk94/lemurchase/?action=view¤t=6da2fba7.flv