 The park also supports lowland species of the former Big Scrub, which was the largest area of subtropical lowland rainforest that was intensively cleared; now less than 1% remains.Of all the known native vascular flora in NSW about 10% of it can be found here with 72 that are identified as threatened with extinction.The park supports a rich diversity of species that includes more than 40 species of mammals, 27 reptiles, 23 frogs, over 140 bird species, over 650 known plant species including numerous ferns and various orchids, and a diverse variety of fungus and lichens.