Aspergillus fumigatus (A. fumigatus) is one of the most important mycotic infection in wild animals stressed by captivity and concurrent disease. A 14-year-old Carribean flamingo controlled bumble foot with antibiotics died after having dyspnea, depression, and anorexia. Necropsy findings revealed pyogranulomatous inflammations of lung and greenish gray-colored mold on air sacs. A carribean flamingo was diagnosed as pyogranulomatous pneumoniae due to A.fumigatus infection by results of lung tissue culture and microscopic examination.