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Emperor Bird-of-paradise Paradisaea guilielmi
BirdLife is updating this factsheet for the 2016 Red List
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This poorly known species qualifies as Near Threatened because although it is fairly common within its small range it probably has a moderately small population and, since it appears to be replaced by a closely related congener in degraded forest, it is probably undergoing a moderately rapid population decline.

Taxonomic source(s)
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

Distribution and population
Paradisaea guilielmi is endemic to the Huon peninsula of Papua New Guinea where it is widespread and relatively common. 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).

Population justification
The population size of this species has not been quantified, but it is described as fairly common.

Trend justification
There are no data on population trends; however, the species is probably in decline owing to habitat degradation - it is replaced in degraded forest by P. raggiana.

It inhabits forest from 670-1,350 m, sometimes from 450-1,500 m, throughout the peninsula.

Forest within its range is under continuing threat from both commercial logging and cultivation for the rapidly increasing human population (Coates 1990, Frith and Beehler 1998, W. Betz in litt. 1999). Forest degradation appears to bring it into contact with the competitively dominant P. raggiana, which eventually replaces it. There appears to be a small demand for its plumes by local people and traders, but leks still survive within villages (W. Betz in litt. 1999). If it proves to be unable to survive in large areas of logged forest, it could be threatened by any increase in logging, exacerbated by agricultural clearance.

Conservation Actions Underway
CITES Appendix II. Conservation Actions Proposed
Regularly monitor the population at selected sites. Further research its reported tolerance of degraded forest, and its interactions with P. raggiana. Protect significant areas of remaining primary forest on the Huon peninsula.

Coates, B. J. 1990. The birds of Papua New Guinea, 2: passerines. Dove, Alderley, Australia.

del Hoyo, J.; Elliott, A.; Christie, D. 2009. Handbook of the Birds of the World, vol. 14: Bush-shrikes to Old World Sparrows. Lynx Edicions, Barcelona, Spain.

Frith, C. B.; Beehler, B. M. 1998. The birds of paradise. Oxford University Press, Inc, New York.

Further web sources of information
Explore HBW Alive for further information on this species

Search for photos and videos, and hear sounds of this species from the Internet Bird Collection

Text account compilers
Derhé, M., Dutson, G., Mahood, S., O'Brien, A.

Betz, W., Gregory, P.

IUCN Red List evaluators
Butchart, S., Symes, A.

Recommended citation
BirdLife International (2016) Species factsheet: Paradisaea guilielmi. Downloaded from on 26/10/2016. Recommended citation for factsheets for more than one species: BirdLife International (2016) IUCN Red List for birds. Downloaded from on 26/10/2016.

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 Near Threatened
Family Paradisaeidae (Birds of paradise)
Species name author Cabanis, 1888
Population size Unknown mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 10,700 km2
Country endemic? Yes
Links to further information
- Additional Information on this species