A 13-year-old male golden pheasant (Chrysolophus pictus) was examined for a hemorrhagic mass on the leading edge of the right propatagial area of 1 day's duration. Physical examination revealed a scabbed mass that bled easily when manipulated. Hemorrhage and cellulitis were observed from 2 incisional biopsies. The mass was removed under general anesthesia, and histopathology demonstrated a hemangiosarcoma. Assays on white blood cells for avian leukosis/sarcoma viruses, Marek disease viral serotypes 1, 2, and 3, and reticuloendotheliosis virus were negative. The bird recovered uneventfully, but the tumor recurred within 10 days after removal. Upon clinical deterioration 3 months later, the bird was euthanized.