Well, we went to the chicken farm yesterday. It was different than I expected. We didn't get to actually go inside the building because of boisecurity but we were in the room at the end where the eggs came out on the conveyer. There was a great big viewing window there that we could see in. I now know what 10,000 chickens looks like now. They were everywhere! They did not have much space at all but they also looked like they didn't have any issues getting to where they wanted to be. But, like my husband said, he doubts that a chicken on this ends of the building would ever see the other end. They were dust bathing in the litter on the floor and looked generally content though it's not like they knew any better. They did have the doors open for them to "free range" where there were 100-200b outside sun bathing but their free range area was a fenced off area that only went out about 15 ft and then down the length of the building. It was all gravel. The place was very clean though and so were the birds. The people who own it were very nice. They had well cared for horses and pets. Their 7 year old even brought down her favorite horse to take my kids for a ride. Overall, it was a nice visit and am interesting experience. I still feel horrible for the birds but what can you do.
I'm glad it wasn't what you were dreading, and good to hear the birds were able to enjoy at least some 'normal' chicken activities, even if not in an environment we would consider for our backyard flocks.
The more of us who keep our own birds the less need for birds to be kept in the 'factory' type environments...