Yeah got experience of other "tropical" birds outside
Conures are not an issue but birds moved straight outside from indoors Autumn / Winter beginning of Spring (continual night temperature in double figures in spring so make it back end) are the ones that will suffer not being given time to acclimatise.
We can breed almost any species and keep most bar a few like hummingbirds and brush tongues permanently outside.
Your providing shelter making it warmer (my aviary is in winter about 3 degrees without heating above outside temperature as it gets closed in with perspex panels to the front) and ample food no foraging as such required with miles to have to get it. Make sure you pop a light in as during dark nights you might need to go in also I put mine on a timer for idiot night (bonfire night) so my birds can see if they get spooked in the dark then it goes off just after midnight on that and New Year's Eve.
This year is one of the very few I have had issues with it being too hot and having to hose everything down to keep them cool enough but even in hose pipe ban your allowed to hose them down I use it on fine mist.
Have a breeder in here he has his greys, Amazon's, cockatoos breeding happily outside think he was years ago breeding slender billed conures outside. I
People like to breed them indoors. Lots of the zoo's small animal parks around here keep conures outside 24/7 think there was a place in Leeds one of the council owned places that kept outside years ago as do flamingo land and Harwood. Have a look at ZooAmazons thread Andrew goes to lots of those types of places photographing the birds.
My little dude flock love playing in ice and snow - complete loonies!
@cozmicaal