region are platypus (Ornithorhynchus anatinus), dusky antechinus (Antechinus swainsonii), greater glider (Petaurus breviceps), wombat (Vombatus ursinus), eastern grey kangaroo (Macropus giganteus), wallaroo (Macropus robustus), red-necked pademelon (Thylogale thetis), red-necked wallaby (Macropus rufogriseus) and peregrine falcon (Falco peregrinus). The largest population of koalas (Phascolarctos cinereus) in southern Sydney are found in Wedderburn, which is located in and around the park. Their breeding habitat runs along the creek lines of the O’Hares Creek and Georges River starting from the Stokes creek junction to north of Kentlyn. Koalas are endangered, and their population is in decline. The eastern pygmy possum, found in the park, is listed as vulnerable. There are also some regionally significant frog and reptile populations found in the park, including the giant burrowing frog (Heleioporus australiacus) and the great barred frog (Mixophyes fasciolatus). The broad-headed snake (Hoplocephalus bungaroides) and the red-crowned toadlet (Pseudophryne australis) inhabit exfoliated rock on the sandstone plateaus. This is a habitat that has been dramatically degraded and fragmented in other Sydney regions but which is relatively undisturbed within the park. Bushrock collection, usually for garden use, is considered to be a key threatening process for the snake and toadlet as they use the rocks for shelter. There are non-native fauna species found within the protected area include feral cats and dogs, rabbits, foxes, black rat, deer and mosquito fish. The following species are of high priority as most of their habitats are in the Woronora Plateau: broad-headed snake (Hoplocephalus bungaroides), Littlejohn’s tree frog (Litoria littlejohni), spotted-tailed quoll (Dasyurus maculatus), large-footed myotis (Myotis macropus), east-coast free-tailed bat (Mormopterus norfolkensis), green tree frog (Litoria caerulea), grey-headed flying fox (Pteropus poliocephalus) and the southern emu-wren (Stipiturus malachurus). These species suffer from a variety of threats, chiefly habitat loss. The park is considered to be critical to the regional conservation of the beautiful firetail (Stagonopleura bella), tawny-crowned honeyeater (Gliciphila melanops), Rosenberg’s goanna (Varanus rosenbergi), and the eastern three-lined skink (Bassiana duperreyi). Diverse freshwater fish species are found within creeks in the park, including the Macquarie perch (Macquaria ambigua), which is a threatened species. The freshwater species Cox’s gudgeon (Gobiomorphus coxii), long-finned eel (Anguilla reinhardtii), climbing galaxias (Galaxias brevipinni) and the Sydney (Euastacus australasiensis) and spiny crayfish (Euastacus spp.) are also found in the park. Environmental threats Pests Fifty plant species found in the park are considered introduced species. Most weed populations are found where there has been human activity, such