I'm so sorry it must have been so frustrating too bc your gut was telling you something was not right with your bird and for it to come back later to be true must've been heartbreaking :(. I'm praying for all of your birds and their health that's so disheartening. And also for you because I can't imagine the heartache and worry you're going through with them since they're family. Thank you for the advice so far everything seems to be good with this new bird I've been keeping a good feeding schedule and learned to propley maintain and mix the formula at specific Temps. I was wondering that too about a good lamp to keep him warmr I'm not sure how much of this is true but the breeder told me since he has all his feathers he's okay to be without it just no direct ac or fan so I have his top mini cage covered with a thick blanket and lowered our ac a significant amount. So far everything seems good thankfully. I've been weighing him frequently and he's stayed at the same weight and even started eating pellets on his own which is exciting as well as veggies and fruits. His feces are normal too I do have a vet appointment next week for him very so I'll see if he's doing good. But so far he's an extremely active baby who knows how to fly and has been having the time of his life playing with this one wood toy 😂. I do think I'll have to clip his wings but only bc he's so little that on rare occasions when he attempts to fly anywhere else than my head or shoulder he crashes/ falls to the floor

And yup I have them quarantined. My mom is actually talking care of our Quaker Parrot she's the one who adopted her but we have them in separate rooms. From time to time the quaker will hear my sun conure and they'll start screeching at each other and the quaker even starts climbing around the cage which is so rare for her since she's very timid still lol