Debilitating cutaneous poxvirus lesions on two captive houbara bustards (Chlamydotis undulata).

SUMMARY. Poxvirus was isolated from cutaneous nodules on two young Houbara bustards (Chlamydotis undulata) bred in captivity in Saudi Arabia. Birds were emaciated and presented nodules on tibiotarso-tarsometatarsal joints, toes, and the carpal joint. Diagnosis was confirmed by histopathology, virus isolation on inoculated chorioallantoic membranes of embryonated chicken's eggs, and electron microscopy. Progressive leg lesions were extensive and interfered with walking, significantly debilitating the birds. Successful excisions of these lesions were performed.