In the nervous system, the cerebellum proved to be the preferred site, tending to harbour the most severe lesions of all. However, crows and magpies proved to be the exception to this rule, for reasons unknown. Curiously, the neurologic signs of the affected birds did not correlate with the cerebellar lesions found at autopsy. The reason for this discrepancy may lie in the fact that most birds suffered from disseminated infection, so that their cerebellar signs were masked by the general severe malaise characteristic of the infected birds. Histologic Lesions in the New York Exotic Birds Cerebellum, Guanay cormorant.
Subgross image demonstrates extensive hemorrhage in the cerebellar folia.
Brain, Chilean flamingo. The thickened meninx is edematous and infiltrated by a mixture of inflammatory cells. Heart, Chilean flamingo. The myocardium is necrotic and is infiltrated with lymphocytes and macrophages. Spleen, Guanay cormorant.