This seminar depicts a case of zinc toxicity in an 8-year-old male sulfur crested cockatoo. He presented after a one year history of intermittent lethargy, inappetance, and depression. His general appearance was "fluffed" with unkempt feathers. After our initial exam Angel's problem list included weight loss, loose stool, dull plumage, and a prominent keel. Determining the cause of chronic illness in a bird with such nebulous signs can be difficult. By implementing diagnostic tools such as routine blood work, radiography, endoscopy and heavy metal testing we were able to perform pertinent tests to rule in and out differentials for Angel's condition. Eventually a therapeutic plan was devised which Angel responded to favorably and treated the underlying cause of his condition.