I was in touch with Mary from the Chicken Run Rescue. She emailed me saying that chickens make excellent indoor pets. She has 1/4 inch screening around her windows (hopefully, just in a room reserved for the hens, I'm not sure).
I've recently gotten two skittish ex-battery hens, which are in a coop most of the day, but during heatwaves, they are placed in the bathtub with food and water to drink. Every two hours, I go in to wipe up the poop, as they step in it. (Apparently they are known for doing so). I can hardly wait for chicken diapers; that is essential in my books! I bought an expensive diaper harness from the US, and left it on a hen too long, so now she has a bare armpit. Now I know that I need to make a correction (tug on shock cord or lightly tap top of head) every time they peck at the harness. Now they are putting their feet through, trying to pull it off their chest, so I have to correct for that too. I have read people train their hens to defecate in a certain spot by rewarding them, so if you have an aptitude for training, that will reduce the amount of cleaning.
Mine are leghorn hens, came from a small town in eastern Ontario (and we are no where near communist, but the bylaws are crazy). There were 72,000 birds in the place. Their claws were 6 inches long, according to the rescuer who paid $1.25. They started laying 4 days ago, and I have 4 eggs, but I don't expect them to be high producers.
Check out clicker training for hens, too. I use my mouth as a clicker, as I don't always have a clicker on me. You will sound like a horse trainer, but your hens won't know the difference.
I think, if you really don't like how the birds are being treated, the best thing is not to buy eggs or eat chicken. In other words, vote with your wallet. Personally, I have found going vegan easier than cleaning up after my 2 hens for 2 weeks, although it has its moments. Whatever you decide to do, I wish you the best of success.
PS - I like this forum, now I'm learning about quail, which I used to see running wild in Victoria, a beautiful city where bylaws have always permitted hens (and perhaps other livestock; I also think it allows horses, but I never met anyone with horses in their yards, even in the neighborhoods with large lots).