I know sick birds should be quarantined, I took it to the vet. They weren't sick til they got hypothermic sleeping outside. They are fully feathered adult birds. Vet told me sometimes unusual things just happen. Not everything is always by the book. Go figure it happened to me.
I won't be having any issues with things getting in my coop thru the run. My run is covered with galvanized small mesh panels and the whole run is made of the same thing. Needed heavy duty and tight cause I live out in the middle of no where. Hence why I opt to leave it open. Have had chickens a long time in this set up and have not lost one to a predator...yet.
I’ve seen her enclousures. Fort Knox for sure!!