Peanut, my cockatoo, has been itching and picking at his feathers for some time now and I'm not sure why. I took him to a avian vet almost a month ago, and the results came back great. The blood work and the other examinations showed that he was healthy, but I can't understand why he keeps itching. Sometimes he plucks, but is not as much as before when I first got him. He also hasn't stopped his nesting behavior. He likes to break pieces off of his toys and tries to stuff them into his feathers. Is this a reason for concern? On the plus side, he has been more and more playful with every passing day. It just seems that the constant itching and self grooming is a discomfort to him and I wish to help him.