Vertebrate animals are represented by mammals, birds and reptiles. As of 1996, mammals are represented exclusively by the Australian sea lion which uses the island both as a haul out and as a breeding colony. As of 2006, the following bird species have been observed on the island: white-faced heron, sooty oystercatcher, welcome swallow, silver gull, little grassbird, rock parrot, osprey, Australian pelican, black cormorant, black-faced cormorant, willie wagtail, crested tern, common starling, and masked plover.DEH, 2006, pages 65, 68, 69, 70 and 71 While most of the bird species are reported as using the island as a roost, the Australian pelican also uses it as a breeding colony.DEH, 2006, page 69 As of 2006, only one species of reptile, the bull skink, has been observed.Robinson et al, 1996, page 180
