What do you have to do if your budgie bird claw got hurt and it is purple or black what do that mean?

If your budgie's claw has been damaged to the point where it is purple or black, the claw is now dead tissue, and should be removed expertly by a vet. If it stays there, the whole foot could become infected. More damage could also occur as the bird has no sense of feeling in that claw, and anther knock or tear could extend further up the foot.