The guide includes most birds, many fish, many mammals, a number of reptiles, and a number of invertebrates. It also includes a small but growing number of plants.
Note that the species included in this guide are determined as follows: all species with Sydney-area records in the Atlas of Living Australia have been included if the Gaia Guide has a representative image of that species. Thus, some species are included because of erroneous records in the Atlas of Living Australia. Other species are omitted from the field guide because the Gaia Guide does not yet have sufficient information to provide identification assistance.
You can improve the quality of the data in this field guide by contributing information to the Gaia Guide (http://www.gaiaguide.info/).