South East Mutton Bird Islet is a steep islet, with an area of 0.52 ha, in south-eastern Australia. Its highest point is 22 m asl. It is part of the Mutton Bird Island Group, lying close to the southern end of the south-western coast of Tasmania. It is also part of the Southwest National Park, and thus within the Tasmanian Wilderness World Heritage Site.[1] The island is part of the Port Davey Islands Important Bird Area, so identified by BirdLife International because of its importance for breeding seabirds. [2]
Recorded breeding seabird species are the Short-tailed Shearwater (250 pairs), Fairy Prion (1000 pairs), Black-faced Cormorant and Silver Gull.[1]