NT
Emperor Bird-of-paradise Paradisaea guilielmi



Taxonomy

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2022 Near Threatened B1b(ii,iii)
2016 Near Threatened C1
2012 Near Threatened A2c+3c+4c;C1
2008 Near Threatened A2c; A3c; A4c; C1
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

Migratory status not a migrant Forest dependency high
Land-mass type shelf island
Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 16,500 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend decreasing poor suspected 2007-2025
Rate of change over the past 10 years/3 generations (longer of the two periods) 1-9% - - -
Rate of change over the future 10 years/3 generations (longer of the two periods) 1-9% - - -
Rate of change over the past & future 10 years/3 generations (longer of the two periods) 1-9% - - -
Generation length 5.9 years - - -
Number of subpopulations 1 - - -
Percentage of mature individuals in largest subpopulation 100% - - -

Population justification: The population size of this species has not been quantified, but it is described as fairly common (Frith and Beehler 1998).

Trend justification: Although it is reported to be tolerant of secondary and degraded forest (Coates 1990, Frith and Beehler 1998, W. Betz in litt. 1999), forest degradation around Boana village has led to a major decline, coincident with an increase in Raggiana Bird-of-paradise P. raggiana (P. Gregory in litt. 1999).
There are no data on population trends; however, the species is suspected to undergo a slow decline owing to habitat degradation by clearance for subsistence gardens by the growing local population. Remote sensing data (Global Forest Watch 2022, based on data from Hansen et al. [2013] and methods disclosed therein) indicate that in the three generations to 2021, forest cover extent in the species' mapped range reduced by c.5% and this is suspected to have had an approximately proportional impact on the population size. Such rates of reduction are suspected to continue into the future. The species is replaced in degraded forest by P. raggiana and P. minor.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Papua New Guinea extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations marginal resident
Artificial/Terrestrial Rural Gardens marginal resident
Forest Subtropical/Tropical Moist Lowland major resident
Forest Subtropical/Tropical Moist Montane major resident
Altitude 670 - 1350 m Occasional altitudinal limits 450 - 1500 m

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) No decline Low Impact: 4
Stresses
Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Handicrafts, jewellery, etc. - - non-trivial recent

Recommended citation
BirdLife International (2024) Species factsheet: Paradisaea guilielmi. Downloaded from https://datazone.birdlife.org/species/factsheet/emperor-bird-of-paradise-paradisaea-guilielmi on 24/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 24/02/2024.