Hi Eddie
Welcome to the forum. Best wishes with the taming process!
Ideally, your bird would have all of its claws... as it helps them grip perches. However, birds are extremely adaptive... and from your description of him, I'd say he's adapted just fine.
If you ever decide to have his nails trimmed / ground down, I'd be really careful however. I let someone who I thought was an expert file Janey's (our blue IRN) claws once and for a couple of days she would slip off her tree. I felt so awful for her... and I've never let anyone other than a vet do anything with her nails again...
I've just taken a look at my arms... and I used to have all sorts of red marks on my arms from their feet... but I don't seem to have any now. We always have natural branches in their cage and a couple of months ago I purchased a cement perch swing (which they love). I guess that is a natural way to keep nails down.
Sorry, I got a bit off-topic there... I'll stop ranting now.
Welcome and good luck!
Eddie Harris wrote:Could it possibly be a birth defect?
A breeder could probably answer this question as I don't know.
Take care.
Ellie.