was transported to the zoo and the zoo hospital staff took possession of the capture. In March 2013, the zoo, which was hosting a private party at the time, had to initiate a lockdown when two striped hyenas somehow got past their barriers. They were "darted with a sedative and taken to the veterinary care clinic." In 2014, a koala named Mundu escaped to a neighboring tree just outside its Koalafornia Australia Outback enclosure. Zookeepers lured him down the tree once the park closed that day. In early 2015, two Wolf's guenons monkeyed around outside of their Lost Forest enclosure after escaping. One of the monkeys neared a fence line off of Route 163, but was brought back to safety without injury. Features The zoo offers a guided tour bus that traverses 75% of the park. There is also an overhead gondola lift called the Skyfari, providing an aerial view of the zoo. The Skyfari was built in 1969 by the Von Roll tramway company of Bern, Switzerland. The San Diego Zoo Skyfari is a Von Roll type 101. Exhibits at the zoo are often designed around a particular habitat. The same exhibit may feature many different animals that can be found side by side in the wild, along with native plant life. Exhibits range from an African rain forest (featuring gorillas) to the Arctic taiga and tundra in the summertime (featuring polar bears). Some of the largest free-flight aviaries in existence are here, including the Owens Aviary and the Scripps Aviary. Many exhibits are "natural", with invisible wires and darkened blinds (to view birds), and accessible pools and open-air moats (for large mammals). The San Diego Zoo also operates the San Diego Zoo Safari Park, which displays animals in a more expansive, open setting than at the zoo. Animals are regularly exchanged between the two locations, as well as between San Diego Zoo and other zoos around the world, usually in accordance with Species Survival Plan recommendations. San Diego Zoo has one of the world's largest and most diverse animal collections; however, the number of animal species held has reduced over the past two decades from 860 to approximately 650. This comes as exhibits are redeveloped into larger, more natural displays, and as a number of animals are transitioned to San Diego Zoo Safari Park. The temperate, sunny maritime climate of California is well suited to many plants and