Among the many bird species to be found in the Reserve are at least 18 native species:
• Bellbird (Korimako, Melanura anthornis)
• Blue Penguins (Korora, Eudyptula minor)
• Brown Creeper (Pipipi, Mohoua novaeseelandiae)
• Fantail (Piwakawaka, Rhipidura f. fulginosa)
• Fernbird (Mātātā, Bowdleria punctata)
• Fiordland Crested Penguins (Tawaki, Eudyptes pachyrhynchus)
• Grey Warbler (Riroriro, Gerygone igata)
• Long-tailed Cuckoo (Koekoeā, Eudynamys taitensis)
• Parrots (Kaka, Nestor m.meridionalis)
• Red-crowned parakeet (Kakariki, Cyanoramphus novaezelandiae)
• Rifleman (Titipounamu, Acanthisitta chloris)
• Shining cuckoo (Pipiwharauroa, Chrysococcyx lucidus)
• Silvereye (Tauhou, Zosterops lateralis lateralis)
• Tomtit (Ngiru-ngiru, Petroica macrocephala)
• Tui (Prosthemadera novaeseelandiae)
• Sooty Shearwater (Tītī, Ardenna grisea)
• Southern Brown Kiwi (Tokoeka, Apteryx a. lawryi)
• Wood Pigeon (Keruru or Kukupa, Hemiphaga novaeseelandiae)
Importantly, Stewart Island weka (Gallirallus australis scotti) are not present within the Reserve. Although they are native to Stewart Island, their food source includes the invertebrates and lizards that are re-establishing themselves within the Reserve so they will continue to be precluded from entering the Reserve by the biosecurity fence.
There are at least 7 known invertebrate species living within the Reserve, including a healthy population of common skink (Oligosoma polychroma). We would like to see a survey completed on the Reserve's lizard population to see if there are resident geckos and would welcome enquiries from interested researchers. We are also interested in helping protect the the Stewart Island green skinks that are now mainly confined to the Mason's Bay and Codfish Island areas, by a translocation into the Reserve.
The coastline surrounding the Reserve is also the home or resting point for a variety of marine mammals including NZ fur seals, NZ sea lions and the occasional leopard seal.
The Trust’s strategy is to conserve the existing native fauna, to help grow the populations of the resident species and to seek opportunities to re-establish other absent natives such as Yellowhead (Mōhua, Mohoua ochrocephala) and South Island Saddleback (Tieke, Philesturnus carunculatus).
The Trust is particularly interested in the potential to establish tuatara (Sphenodon punctatus) within the Reserve. There is a pressing need to find new locations for the expanding population of captive bred tuatara and it is the Trust’s understanding that the Reserve represents a very suitable habitat due to its north facing aspect, abundance of invertebrate populations on which tuatara predominantly prey; including beetles, crickets and spiders, and the absence of the predatory weka.