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Location Australia, Western Australia
Central coordinates 119o 5.97' East  19o 35.31' South
IBA criteria A4ii
Area 31 ha
Altitude 0 - 8m
Year of IBA assessment 2009

BirdLife Australia

Summary In counts in 1982 and 1984, this island supported one of the world's largest populations of Brown Booby and more than 1% of the world breeding population of Lesser Frigatebird.

Site description Bedout Island is situated 40 km north of the mouth of the De Grey River in the Pilbara of Western Australia. It is an undulating sand cay, vegetated with Spinifex longifolius, has an arid climate with an annual average rainfall of ca 300 mm and is subject to occasional tropical cyclones.

Key Biodiversity Additional breeding birds: 120-170 pairs Masked Booby, White-bellied Sea-Eagle, Silver Gull, Crested Tern and Lesser Crested Tern. Old records, possibly before Black Rats introduced, of Roseate Tern, Sooty Tern and Brown Noddy.

Non-bird biodiversity: Rattus rattus was probably introduced from pearling vessels late 19th century; eradicated 1991.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Lesser Frigatebird Fregata ariel resident  1972-1984  900-2,289 breeding pairs  good  A4ii  Least Concern 
Brown Booby Sula leucogaster resident  1972-1984  1,000-10,700 breeding pairs  good  A4ii  Least Concern 

IBA Monitoring

2008 high not assessed not assessed
Good - based on reliable and complete / representative data

Invasive & other problematic species, genes & diseases invasive non-native/alien species/diseases - named species likely in long term (beyond 4 years) whole area/population (>90%) moderate to rapid deterioration high

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Bedout Island Nature Reserve 31 is identical to site 31  


IUCN habitat Habitat detail Extent (% of site)
Coastline Sand cays, islets & bars  100%

Land ownership Western Australian State Government with management by Dept of Environment & Conservation.

Land use

Land-use Extent (% of site)
nature conservation and research 100%

Protection status Bedout Island Nature Reserve.

Access/Land-Owner requests Apply for permission from DEC.

Acknowledgements The nomination was prepared by Andrew Burbidge in consultation with DEC.

References Burbidge, A.A., Fuller, P.J., Lane, J.A.K. & Moore, S.A. 1987. Counts of nesting boobies and Lesser Frigate-birds in Western Australia. Emu 87, 128-9.

Burbidge, A.A. and Morris, K.D. 2002. Introduced mammal eradications for nature conservation on Western Australian islands: a review. In: Veitch, C. R.; Clout, M. N. (eds) Turning the tide: the eradication of invasive species. Auckland, IUCN SSC Invasive Species Specialist Group, pp. 64-70.

DEC Seabird Breeding Islands Database

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Bedout Island. Downloaded from on 24/10/2016

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