She's THREE and she's ready to party. Happy birthday, Siska! 🎂🦧 Join us this Saturday, August 29 for Siska's Corny 3rd Birthday in Primate Panorama! The celebration kicks off at 9:30 a.m. and you will not want to miss it. 🌽 Three years of silly, goofy, absolutely unhinged orangutan energy, and we wouldn't have it any other way. We love you, Siska! #Siska #SumatranOrangutan #DenverZooConservationAlliance #PrimatePanorama