Aspergillosis in a gyrfalcon (Falco rusticolus) in Saudi Arabia


By Mohammed A. Rahim, Amel O. Bakhiet, Mansour F. Hussein.


A mixed case of chronic tracheal (syringeal) and pulmonary (lungs and air sacs) aspergillosis was diagnosed in an adult female gyrfalcon (Falco rusticolus). The bird presented with a 4-week history of severe dyspnea, exercise intolerance, depression and reduced appetite. Physical ex- amination revealed slight emaciation. Hematological analy-sis showed leucocytosis, heterophilia, monocytosis, and thrombocytosis. Radiographic examination showed thicken- ing of the air sac walls and increased radiopacity within the lung field. Caseous granulomatous lesions were observed during tracheoscopy and laparoscopy procedures. Cytolog-ical examination of specimens obtained from these lesions demonstrated Aspergillus species, which was isolated in culture and identified as Aspergillus flavus.