Mammals in the state conservation area include the vulnerable squirrel glider, which lives in both the littoral rainforest and eucalypt woodlands in the northern part of the park. The ringtail possum and sugar glider are also common. The cabbage tree palm forests are summer feeding sites for the grey-headed flying fox, and swamp mahogany is a one of their major winter food sources.
Small mammals include the vulnerable New Holland mouse, brown antechinus, swamp rat and swamp wallaby. Two species of micro bats, the little forest bat and Gould’s longeared bat, have been recorded in recent surveys.
The rock platforms in Munmorah are important roosting and feeding areas for gulls, terns, migratory waders and herons. Many migratory birds are seen in the park, some journeying from as far as China and Japan. The lake foreshore is also a refuge and feeding ground for migratory herons and waders.
The endangered little tern is found in Munmorah, as well as two vulnerable species, the sooty oystercatcher (seen mainly on the coastal rock platforms) and the osprey.
You may catch a glimpse of the white-bellied sea eagle which nests in the littoral rainforest, or the brush bronzewing and the bar-shouldered dove in the coastal dunes. The southern emu wren is resident on the low coastal heaths. The coastal forest and tall heaths are important feeding areas for honeyeaters, which overwinter on the Central Coast. Rainforest remnants provide food for the uncommon migratory fruit-eating pigeons. Cabbage palm fruit is particularly important for the topknot pigeon, in late spring and summer.