@Greytness Yup. Parrot freedom has its costs.
Ours has enclosures where a large corner (picture a 15-20 foot triangle with that clear greenhouse-style roofing material) is affixed on top and sides with extra perches beneath it. Gets them out of the sun, wind, rain, etc.. That said, while they may prefer to sleep in that corner together at night -- they actually prefer (daytimes) being out in the open even in rain, wind (even snow - which is rare here, but it happens every few years). They just acclimate like the outdoor birds. Hence they accept no new parrots in hot summer or winter -- parrots must arrive in spring or fall to acclimate. That's why Snickers will go mid-April. Though overall, it's a mild climate here.
Late/early placements often end up indoors until temps are good. We had crazy unusual cold temps here a week after I placed my first parrots there in April 2017 -- Ces ended up removing them from the sanctuary and taking them inside for a week (he actually took them into his own home). There is also an indoor garage area in a true emergency (hurricanes (sort of rare here) or such) but it is a HUGE deal to move all the parrots indoors -- must be a true emergency to do so. I used to have a cool picture of the hundreds of cages in that garage one year when we got a hurricane (which thankfully turned out to be no big deal). But what a chore they had to move all these guys indoors for it.