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Christmas Boobook Ninox natalis

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable D2 

IUCN Red List history

Year Category
2013 Vulnerable
2012 Vulnerable
2008 Vulnerable
2007 Vulnerable
2006 Vulnerable
2004 Vulnerable
2000 Critically Endangered
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type   Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 140 medium
Number of locations 1 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 670 good Estimated 2004
Population trend Stable poor -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 4.1 - - -
Population justification: The population is estimated at c.1,000 individuals (S. Garnett in litt. 2004, D. James in litt. 2004, 2005), roughly equivalent to 670 mature individuals.
Trend justification: No hard data are available, but a negligible decline or stable trends are suspected because the species appears to adapt fairly well to secondary habitats. Control of the ants may have allowed the species's population to stabilise (S. Garnett in litt. 2005), although there is no evidence of past declines or fluctuations (D. James in litt. 2007).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Christmas Island (to Australia) Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Christmas Island (to Australia) Christmas Island site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Shrubland Subtropical/Tropical Moist suitable resident
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation
Energy production & mining Mining & quarrying Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Species disturbance, Ecosystem degradation, Ecosystem conversion
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Unspecified species Timing Scope Severity Impact
Future Majority (50-90%) Slow, Significant Decline Low Impact: 4
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Yellow Crazy Ant (Anoplolepis gracilipes) Timing Scope Severity Impact
Ongoing Whole (>90%) Negligible declines Medium Impact: 6
Stresses
Indirect ecosystem effects, Ecosystem degradation

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Pets Whole Adults and juveniles Wild International Trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Ninox natalis. Downloaded from http://www.birdlife.org on 20/10/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/10/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Vulnerable
Family Strigidae (Typical Owls)
Species name author Lister, 1889
Population size 670 mature individuals
Population trend Stable
Distribution size (breeding/resident) 140 km2
Country endemic? Yes
Links to further information
- Summary information on this species