The reserve is part of the 7334 ha Budderoo and Barren Grounds Important Bird Area which contains large numbers of endangered Eastern Bristlebirds, as well as smaller numbers of Pilotbirds and Rockwarblers, in a mosaic of sandstone heath and eucalypt woodland habitats.
The greater Blue Mountains region has been identified by BirdLife International as an Important Bird Area (IBA) because it supports a high proportion of the global populations of the range-restricted Rockwarbler as well as populations of Flame Robins, Diamond Firetails and Pilotbirds.