スミソニアン国立動物園さんのインスタグラム写真 - (スミソニアン国立動物園Instagram)「❤️🦧 Did you know that Iris was named for the IRS (Internal Revenue Service) because she was born on tax day, April 15? It’s true! Join us in wishing this beautiful gal a happy 36th birthday! 🎉 . . . Iris’s mind is very sharp; she excels at cognitive research projects, husbandry training and other tasks that require brain power. Her goofy personality is incredibly endearing. She often shows off, tumbles around, hides under sheets and chases after her fellow orangutans—and keepers! Her wonderful sense of humor and energy make her a great “auntie” and playmate for Redd. . . . On sunny days, keepers often find “princess” Iris hunkered down in a hammock in the outdoor habitat, taking a nap. It can take a bit of coaxing from them to get Iris to rise and come inside for the evening. She enjoys her beauty sleep and is very skilled at building comfy night nests. . . . Great apes make a new nest each night to sleep in. However, orangutans are unique in that their nests are often high up in the treetops. In the wild, orangutans bend branches and leaves to craft a secure and comfortable spot to sleep. Here at the Zoo, orangutans construct their nests out of hay, wood wool, fleece blankets and sheets. Iris’s night nests are very elaborate and often very tall. In other words, they’re fit for a princess! . . . 📷 Photo 1: Orangutan Iris holds onto cables with both hands and feet as she travels the O-Line, a 50-foot-tall structure that connects the Great Ape House to the Think Tank. 📷 Photo 2: Orangutan Iris rests her head in her hands, looking at the viewer.」4月15日 23時30分