Invasive Species Threat Summary
The Rarontonga Starling Aplonis cinerascens is classified as ‘Vulnerable (VU)’ in the IUCN Red List of Threatened Species.It is endemic to the island of Rarotonga, Cook Islands. The current population is estimated at 600 to 1700 mature individuals (BirdLife International, 2012). A. cinerascens is threatened by a range of invasive species such as the common myna (Acridotheres tristis) and black rats ( Rattus rattus). The species, like many native avian species, is also susceptible to introduced disease (BirdLife International, 2012).
Invasive Species Management Summary
The species is believed to benefit from conservation management of the Rarotonga Monarch (Pomarea dimidiata), which is occurring in the southeast of the island, and which involves intensive rat control. Recent surveys have successfully provided a more accurate population size estimate. Recommendations for action include control of A. tristis and R. rattus (BirdLife International, 2012).