That is brilliant. Nothing to build and when you're done you just collapse it and store it away for use later! How many chicks could it hold? Do you think the plastic would have any outgassing that would affect chicks?
I can relate. I've had asthma all my life. My doctor always says, "Why didn't you come in sooner?" Do you have a pulse oximeter? I always take mine with me when I travel. Makes it harder to brush off symptoms.
Fast healing to you.
We have ground squirrels. They burrow and tunnel underground instead of occupying trees (not many trees in the desert). They can be a real nuisance as they even dig under buildings and foundations, leaving telltale 2" hole openings. Some of them really messed up the foundation of our laundry...