Eesh yeah, he'll stay in quarantine then. I'd lose my mind if something happened to my two.The ideal is get a bird get vet check dsy one, wait a month get vet check and tests done. Most of us can't afford that so do the month then the vet check and tests .
I'm just sharing my worry, because this is the exact thing I'd did, took in a budgie that had been living in the wild ( unknown amount of time free) then let it be with my birds after 2 weeks ....then he got sick , then all of mine got sick . When I ket him out he was eating great do darn active and happy normal pooping....
My son named him Dave No idea why. He's three, and loves naming things.Not sure if you picked a name or not, but I think he looks like a Merlin!