I have had two budgies for a year now, and decided to get a third. Both of my girls are spoiled, I suppose, because they don't like cohabitation, but enjoy their cages side by side. So when I got my new male, I set him up in his own home, next door to the girls. I noticed that he had trouble moving around, unable to fly at all, but I realized quickly that he was missing his tail feathers. I am guessing that is why he is so unsteady. But he also hasn't ever "talked", never chirping or vocalizations at all. After we had him for about two months, he tried one time to vocalize, but it came out as a weird croak. Any advice about my little Amazon?
Were your budgie's wings clipped when you got him? Does he have his long flight feathers now?
If he is missing the primary flight feathers along with the main tail feathers, then it's very possible your budgie has French moult. As to the lack of singing, some male budgies can be more generally shy and not sing as much, but still when they do sing and chirp they do so in the normal budgie language and they don't go months without uttering a sound.
I agree that it's best to have your budgie properly examined by a specialized avian vet about his feather condition and speech problems.
RIP sweet Tito (Summer 2008 - January 17th 2013).
You are missed and never will be forgotten.