Hello;
When I calculated the space, you have 3 x 4'- 12 square feet on the ground. Times each square foot of height, so that becomes 72' of space inside the coop. And yes, I have 6 chickens. The chickens are confined until I bring them out for walks in the woods & parks as mentioned in other threads, but we've had a bit of a rainy streak so they haven't been out the last couple days in particular. I don't recall saying they were in there 24/7 except in the context of them being in there when I'm at work until I can take them out for their free-ranging time. My apologies if this was misinterpreted somehow as 'I NEVER take them out'... because it's not true. When at home, they also have free range around the house with me supervising. They're very well cared for.
Also as aforementioned, the windows are almost always open and/or the AC is on. If neither are, the fans are going. It's almost never still in this place because it gets too warm for me (ie: over 75 to 80; I like it 65-70, and I like feeling breezes rather than still air). Ventilation is never an issue, which means that's out of the equation for the ammonia buildup and part of why I was confused at the sudden ammonia smell.
Also as aforementioned (both in this thread and prior threads), I take out their litter daily without fail- I'm OCD about animal care. That's why I was so surprised when the coop suddenly started having an ammonia buildup. I've never had that issue before.
I'm not quite understanding why it's coming as a surprise that I have indoor chickens, as I've mentioned it several times throughout various threads and no one's really had an issue with it before. I've also met several people at chicken swaps who said it was feasible, my landlords gave permission to let me have them provided I keep them clean and no roosters, etc.. and after reading most of this forum I read that the commonly agreed-upon space for each chicken was roughly 2 to 4 square feet per. Most of the time they enjoy being either on the shelves, down on the floor or on the perching pole. They are pretty happy birds. Only one is having a featherpicking issue at the moment and I think it might be a protein issue (my RIR, and I was told that the breed is 'very pecky' ) so I'm working with that by supplementing their diet. I know other people who have apartment chickens and the owners do the same thing (keep them indoors and take them out with them for free-ranging time/etc) with no ill effects.
@Hawkeye: I'm not sure if we have that store, I'll have to look into it.
Thank you- I did try the PDZ and it worked great. I'm going to see how the coop is tomorrow and get a second flooring for it if it returns.