Black nails?

[Sheba]

He had them ever since we got him but I have never seen something like this before . Is this normal ? Asking just to be sure

 

[Tina&Mill]

Black nails are perfectly normal in birds!
Its caused by menalin in the nail, and for some species/species variants, they all have black nails!

As long as you make sure your super careful not to cut the quick when trimming the nails, you should be okay ^^