EN
The examinations concerned pathogenic fungi isolated from the respiratory and alimentary systems, the subcutaneous connective tissue and bones of a black stork. The sick bird was found in 1993 in the forest near Przasnysz and died shortly after. The death was caused by two species of fungi: A. flavus and C. albicans. They both belong to the pathogenic fungi infesting birds all over the world. They cause lesions in all tissues and organs, including the central nervous system. They may also exert influence through toxins. In case of Aspergillus, the most dangerous ones are aflatoxins, in case of Candida - endotoxins. The toxins enter the body mainly with the food. The phenomenon of transmission through skin or inhalation is also known. Taking into consideration the postmortem results (congestion of parenchymatous organs, focuses of necrosis in lungs, liver and kidneys, creamy nodules and grey spot on bones and subcutaneous tissue) and the opportunistic nature of C. albicans, it seems that initially the stork contracted aspergillosis and that C. albicans attacked it as a secondary infestation organism.