A six-year-old, intact female Indian ring-necked parakeet (Psittacula krameri manillensis) was presented due to chronic weight loss and anorexia. The bird was tentatively diagnosed as proventricular dilation disease (PDD) by radiographic evidences of dilated crop and proventriculus. The patient was symptomatically treated, however the bird was die two months after the first presentation. At necropsy finding, distinctive signs of PDD were noted, and PDD concurrent with ingluvitis was finally diagnosed according to histopatholgic examination.