You did not give any details about what kind of Amazon you have, its age or state of health and diet, so we cannot answer your question. If it has been over a year since your bird's last checkup with an Avian Vet, now is the time to have him checked out, and avian vet can answer any of your questions. Take your bird to only an Avian Vet because they are the only ones licensed and trained in the care of birds.