WARNING: The photos are post mortem examinations from a clinical case and not for the squeamish.
This fungus often presents in poultry, but non-poultry birds are also affected. In most cases this issue is seen after hatching/brooding due to inhalation of fungal spores from contaminated equipment. Respiratory signs are often seen with changes to the "voice" or crow of the patient. Infection is often in those animals who are immune suppressed or exposed to high spore counts