for the Mulu village near the airport and the entrance of the park. Interior and higher parts of the park have a cooler and wetter climate. Biodiversity Fauna There are 20,000 species of invertebrates, 81 species of mammals, 270 species of birds, 55 species of reptiles, 76 species of amphibians and 48 species of fish identified in the park area. Eight species of hornbill have been spotted in Mulu including the rhinoceros hornbill (Buceros rhinoceros), the Wrinkled hornbill (Aceros corrugatus) and the helmeted hornbill (Rhinoplax vigil) with its large solid casque (an enlargement on the bill). Twenty eight species of bats have been recorded in the park. Deer Cave have twelve species of bats. It is home to approximately three million of Wrinkle-lipped bats (Chaerephon plicatus). Millions of bats exit the cave almost every evening in search of food in a spectacular exodus while flocks of swallows and swiftlets enter the cave. In the morning, the reverse occurs. Other mammals include Sunda Pangolin (Manis javanica), Tufted ground squirrel (Rheithrosciurus macrotis), Silvery gibbon (Hylobates moloch), Malayan sun bear (Helarctis malayanus euryspilos), Maroon leaf monkey (Presbytis rubicunda), and Yellow-throated marten (Martes flavigula). There are 25 species of snakes including: Reticulated python, Calamaria snakes, and striped coral snake (Calliophis intestinalis). A number of amphibians are only known from the Gunung Mulu National Park, including squat frog Calluella flava and stream toad Ansonia torrentis. Flora Gunung Mulu National Park contains a large number of plant species. The park has 17 vegetation zones, with 3,500 species of vascular plants, and 1,500 species of flowering plants. There are 109 species in 20 genera of palms, over 1,700 mosses and liverworts, 8,000 species of fungi, and 442 species of spore-producing pteridophytes are recorded. Examples of vegetation zones found in the park are: peat swamp forest, heath, mixed dipterocarp forest, moss forest, and montane ecosystems. Lowland forests occupies 40% of the park area while montane forests occupies 20% of the park area. Strangler fig trees are common in the peat swamp area. Meanwhile, mixed dipterocarp forests is present up to 800 metres in altitude. Examples of trees found in this region are: Shorea, Durian, Garcinia, Calophyllum and Eugenia. Between 800 and 1,200 metres, lower montane forests emerged. Quercus subsericea dominated this region. Upper montane forests is found between 1,200 and 2,170 metres. Epiphytes is abundant in this region. The canopy is between 10 and 20 metres in height.