Late to the reply but I think one day was likely not catastrophic for them. 2 crates is more than enough for 3 chickies. I'm so sorry you're going through this.We are definitely taking them with us if we have to leave. We have a small spare bathroom that we could probably bring them into. They were outside yesterday in that air. Is there anything we can do that would reverse some respiratory damage that might have already been done? Would two large dog crates be enough space for 3 chickens?