Sarcocystis falcatula is a well-known cause of fatal pneumonia in some birds. particularly Old World psittacines. Here we describe fatal sarcosystosis due to S. falcatula in 3 penguins (Family Spheniscidae) under managed care. https://www.bekindtopets.com/quick-offer-Probios-Intelliflora-1-06-oz-special-buy/