Denver Zoo Conservation Alliance on Instagram: "🦧 Happy 2nd Birthday, Siska! 🍌 To celebrate Siska’s 2nd birthday, her Animal Care team turned her habitat into a party wonderland, complete with tropical fruits, colorful streamers and paper chains, and cozy blankets for nesting. Just like any toddler, she wasted no time diving into the fun! Every birthday milestone is a reminder of just how important orangutans are to the future of their species. 💚🦧 Want to celebrate Siska all year long? 🧡 Sy