FEED-RELATED HYPERVITAMINOSIS D IN A CAPTIVE FLOCK OF BUDGERIGARS (MELOPSITTACUS UNDULATAS): MORBIDITY, MORTALITIES AND PATHOLOGIC LESIONS

In the spring of 2012, the Blank Park Zoo began suffering mortalities in a flock of 229 captive Budgerigars (Melopsittacus undulatus) housed in an interactive public-feeding aviary. Clinical signs included weakness, posterior paresis, inability to fly, central nervous signs or acute death. Gross and microscopic lesions were not apparent in acutely affected deceased birds. Many birds had evidence of trauma,...