Burnet Park Zoo) began in 1983. The zoo reopened in 1986 and received its first accreditation from the Association of Zoos and Aquariums the following year; it has been reaccredited every five years since. In 1998, the zoo initiated a capital campaign in 1998 to fund its education classrooms as well as the Amur tiger and Diversity of Birds exhibits. Following a $2 million endowment by the Rosamond Gifford Charitable Corporation in 1999, the zoo was renamed the Rosamond Gifford Zoo at Burnet Park. The next several years saw the construction of a Humboldt penguin exhibit, Penguin Coast, which was completed in 2005 and features a breeding colony of Humboldt penguins. Since then, the zoo has successfully hatched more than 55 penguin chicks as part of the Species Survival Plan for Humboldt penguins. Since 2010, the Friends of the Zoo has assisted the zoo with capital campaigns to construct Primate Park, an outdoor exhibit where siamang apes, Colobus monkeys and patas monkeys rotate on exhibit in warm weather; the Helga Beck Asian Elephant Preserve, a nearly 7-acre preserve for the zoo's Asian elephant herd; and the Zalie and Bob Linn Amur Leopard Woodland, home to the world's most critically endangered big cats. Exhibits U.S.S. Antiquities cave The U.S.S. Antiquities cave is an exhibit that simulates a submarine voyage through time from life's earliest days in the ocean to creatures living on land. Exhibits range in size and include insects, freshwater and marine life, reptiles, and amphibians. Fish species include tomato clownfish, longhorn cowfish, banded archerfish, giant Pacific octopus, starfish and anemones. Amphibian species include poison dart frogs and Panamanian golden frogs, which are considered extinct in the wild. Reptiles species include Gila monsters, northern caiman lizards, yellow-spotted Amazon river turtles, and massasaugas. Adaptations of Animals The Adaptations of Animals wing features animals that have evolved unique adaptations to help them survive in their native habitats. The Nocturnal Animals area is on a reverse light cycle to allow visitors to see animals that are active at night, including Hoffmann's two-toed sloths, fennec foxes, southern tamanduas, North American river otters, Damaraland mole-rats, Mohol bushbabies and a North Island brown kiwi. Diversity of Birds aviary The Diversity of Birds aviary is a large, lofty free flight space that simulates a rainforest habitat and primarily features warm-weather birds from around the world, including roseate spoonbills, pin-tailed whydah, waldrapp ibis, Inca terns, Luzon bleeding-hearts, Nicobar