Country/territory: Australia

IBA Criteria met: A1, A4ii (2009)
For more information about IBA criteria please click here

Area: 9 ha

Protection status:

BirdLife Australia
Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2008 medium not assessed not assessed
For more information about IBA monitoring please click here

Site description
Mewstone is a rocky oval-shaped 9 ha island, about 20 km south of Red Point, between Southport and Port Davey in south-west Tasmania. Composed of Muscovite granite, which is unknown elsewhere in the South-west National Park, the island is very steep and mostly bare jagged rock. The few plant species present on the island are confined to crevices and cavities in the rock where soil has accumulated. An estimated 7500 pairs of Shy Albatross accounts for 60% of the world population; and an estimated 20,000 pairs of Fairy Prion also breed, mostly in crevices and under boulders along the boulder-strewn summit ridge of the island.

Key biodiversity
Other species recorded at Mewstone by Brothers et al. (2001) were Black-faced Cormorant (at least 20 and perhaps up to 30 pairs), Silver Gull (a few pairs and at least 40 roosting birds), Australasian Gannet (individuals occasionally observed loafing), Buller's Albatross (one individual seen over several seasons with Shy Albatrosses), Peregrine Falcon and Forest Raven.

Non-bird biodiversity: Up to 50 Australian Fur Seal haul out on ledges on the east and south sides of the island and on the SE rock. White (1981) recorded the land snail Tasmanembryon tasmanicus and noted that Tasmanian Tree Skink were abundant. Senecio leptocarpus, Senecio lautus, Carpobrotus rossii, Poa poiformis, Asplenium obtusatum, Chenopodium glaucum and Sarcocornia quinqueflora were the only plants found.

Recommended citation
BirdLife International (2020) Important Bird Areas factsheet: Mewstone. Downloaded from on 03/08/2020.