Tiwi Islands

IBA Criteria

Year of most recent IBA criteria assessment: 2009

Populations of IBA trigger species
Species Current IUCN Red List Category Season Year(s) of estimate Population estimate IBA Criteria Triggered
Partridge Pigeon Geophaps smithii LC resident 2001-2002 1,000-2,500 individuals A1, A2, A3
Chestnut Rail Eulabeornis castaneoventris LC resident 2000 uncommon A2
Bush Thick-knee Burhinus grallarius LC resident 1998-2008 frequent A1
Beach Thick-knee Esacus magnirostris NT resident - 26 breeding pairs A1
Great Knot Calidris tenuirostris EN non-breeding 1990-2002 12,000 individuals A4i
Red Goshawk Erythrotriorchis radiatus EN resident 2006 80-160 individuals A1
Northern Rosella Platycercus venustus LC resident 1998-2008 common A3
Varied Lorikeet Psitteuteles versicolor LC resident 1998-2008 common A3
Rainbow Pitta Pitta iris LC resident 1998-2008 uncommon A2, A3
Silver-crowned Friarbird Philemon argenticeps LC resident 1998-2008 abundant A3
Bar-breasted Honeyeater Ramsayornis fasciatus LC resident 1998-2008 frequent A3
White-gaped Honeyeater Stomiopera unicolor LC resident 1998-2008 frequent A3
Yellow-tinted Honeyeater Ptilotula flavescens LC resident 1998-2008 common A3
Australian Yellow White-eye Zosterops luteus LC resident 1998-2008 common A3
Masked Finch Poephila personata LC unknown 1998-2008 rare A3

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

IBA Monitoring

Most recent IBA monitoring assessment
Year of assessment Threat score (pressure) Condition score (state) Action score (response)
2019 high not assessed not assessed
Was the whole site covered? Yes State assessed by unset
Accuracy of information -

Threats to the site (pressure)
Threat Level 1 Threat Level 2 Timing Scope Severity Result
Agricultural expansion and intensification wood and pulp plantations (includes afforestation) - agro-industry plantations happening now some of area/population (10-49%) moderate to rapid deterioration high
Invasive and other problematic species and genes invasive non-native/alien species/diseases - named species happening now some of area/population (10-49%) slow but significant deterioration medium
Natural system modifications fire & fire suppression - increase in fire frequency/intensity happening now majority/most of area/population (50-90%) slow but significant deterioration high

Conservation actions taken at site (response)
Conservation Designation Management Planning Conservation Action Result
Not assessed Not assessed Not assessed not assessed
For more information about IBA monitoring please click here

IBA Protection

Protected Area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)
Kakadu National Park 1,980,400 protected area contains site 783,781


IUCN Habitat Habitat detail Extent (% of site)
Artificial/Terrestrial Forestry plantations, Urban parks & gardens -
Grassland Tussock grasslands -
Forest Eucalypt woodlands, Eucalypt open forests, Eucalypt tall open forests, Melaleuca forests & woodlands, Rainforest & vine thickets -
Wetlands (inland) Ephemeral -
Coastline Intertidal mud, sand & salt flats, Mangrove wetlands -
For further information about the habitat classification please click here.

Land use

Land-use Extent (% of site)
other -
forestry -
For further information about the land use classification please click here.

Land ownership
Tiwi ALT.

Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Tiwi Islands. Downloaded from http://www.birdlife.org on 25/09/2022.