by Pajarita » Mon May 19, 2014 9:01 am
Well, actually, what people consider a 'wellness' exam does not include testing for contagious diseases, that needs to be done separately (and it's quite expensive if done through the vet which I don't, I use an online avian lab). I don't know about your budgies but if they've had, say, chlamydiosis (aka psittacosis) they would continue shedding the organism throughout their life whenever they are stressed out (and captive birds get stressed out very often and easily) so, yes, they could infect your Senegal. They are also prone to AGY as well as scaley mites which are both contagious, and something called soft or French molt but this one is not contagious, it's a dietary and light schedule issue.
Quarantine is always necessary but it doesn't prevent contagion from asymptomatic carriers and, if any of your budgies is one, keeping them in the same room could make your Senegal sick as most of these diseases are shed in the poop which, upon drying up start disintegrating and the microscopic pieces become airborne and get breathed in by the healthy bird.