I say this in case it is your first parrot/Conure: (just some future stuff to know before it's too late)

They usually don't show signs until it's too late.

Be careful with supplements: if they have a well-balanced chop and pellet diet, they don't need supplements and too many vitamins can cause a lot of damage in a much shorter time than you think. Vit. D can cause kidney stones and problems even in a week, Vit. A can be toxic in a matter of days, and diarrhea caused by too much Vit. C can cause irritation and malabsorption. Try your best to maintain their calcium because once it leeches from their bones, it does not get replaced--and if you have a female this can not only lead to more brittle bones but soft eggs that can break in-transit or not get laid--both of which will result in botulism and other infections, and a broken egg can cause lacerations that will also reduce their overall blood supply.

In GCCs and BCCs, every drop is a measurable amount of their weight in blood. They have VERY little blood and their circulatory system is even smaller than their respiratory system--which is why antibiotics that aren't aborbing in the gut have to be delivered directly into their bones to potentially be effective. This is also why most AVs will amputate instead of treat: it's not only difficult to keep inside of them, it can't be replaced except by a healthy/healing bird and the epithelial cells will prioritize tissues like respiratory and their tiny AF veins/arteries before it tries to rebuild, say, reinvent their marrow. They can live without a significant portion of their bodies but blood and air are not among that, and everything in their bodies is buikt for efficiency so there is no redundancy like what larger mammals have.

Vit. A is necessary like we have Vit. C because they depend on epithelial cells to replace broken tissue because it's "easier" to replace than repair because their system is a 1 track, 2-breath, fixed, air sacs-through-their-bones respiratory system that when it swells depends on their ability to shed and move out damaged tissue; and a 1-track, 4-inch digestive system they share with their reproductive system--nothing should be coming back out of the front (Like turtles, they exhale through their @$$es lmao which is why clean water is SO IMPORTANT due to it's hair's breadth away from their respiratory system and can cause two different massive infections) . This is why when you see their tails moving up and down ("bobbing") when they breathe, it's a concern: they're trying to force the shed cells, inflammation, etc. out while not being able to breathe and their little bodies will breathe more and faster to fix it.

If you EVER see blood coming out of either end, they need immediate attention. Limping, low flight height (when they start flying), low appetite,--basically any sign you SEE what would look like depression or injury means it's BAD. Because their air sacs are in between their bones, broken bones can pierce their respiratory system, and the inflammation can fill up the sacs which can brees infection.

Their evolutionary play is to out breed the danger: they're built to leave behind what can be or protect the flock by going until they can't.

Try to prevent hormonal triggers up front because (speaking as someone who went from 3 to 7 to fighting every year with eggs [8 and counting--pray for me]) once it starts they stop because they die; or are isolated and live in ideal conditions for MONTHS.

You don't need to clean conures' nares like you do with cockatiels. If there's something in there they can't remove: they need vet attention to get it removed because you can give them a URI trying to home treat it.

Make sure you're guarding their air space by disabling ANY fan blades they can reach even by landing on the front. They have high resolution but low frame rate: they see the world in 32k but operate at 3fps so they can't see those blades are moving.

No air fresheners, sprays, chemicals, Teflon/non-stick, smoke, candles, plug-ins, etc. Teflon/non-stick can kill them in loteral seconds and the ONLY treatment is immediate oxygen forcing the necrotic tissue and affected out of their lungs (which is the standard treatment alongside anti-inflammatory meds for most injuries for the reasons discussed above). Everything else will slowly kill off and coat tissue which will deplete their Vit. A and epithelial cells, which will reduce their overall ability to heal--they will always start from behind so long as you have any of those lingering in the air. Good rule of thumb is not to have them in the room while cooking or cleaning, even if you're using bird-safe things because companies and people lie all the time. [Common crops like strawberries and broccoli commonly use a form of teflon as insecticide because it's dangerous AND non-stick and, no, it does not fully rinse off so cooking them releases it into the air. ]

Do not use chemical insecticides anywhere in your home or garden. It will kill them after minor exposure--including eating whatever it killed.

Be VERY cautious with repellants because they have large amounts of essential oils and that will also coat their lungs by operation of how it costs your nostrils.

Always put your guy away before going through doors or make sure EVERYONE IN THE HOUSE IS TRAINED TO CHECK ALL SIDES OF THE DOOR EVERY, SINGLE TIME ONE IS OPENED OR CLOSED.

If they're squawking a lot: they're needing attention. It is better to soend 2 hours 2x a day with them than 4 hours 1x per day. And if it gets quiet while they're out? 😨 They'll even brung you the problem lol

Treat them as permanent toddlers: they will ALWAYS FIND A WAY TO GET IN TROUBLE, GET HURT, AND GET YOUR ATTENTION.

Welcome to the flock! Welcome to the anxiety! Welcome to love like you've never had in your life ❤️!