• Summary
• Text account
• Data table and detailed info
• Distribution map
• Reference and further resources

Taxonomic source(s)
Christidis, L. and Boles, W.E. 2008. Systematics and Taxonomy of Australian Birds. CSIRO Publishing, Collingwood, Australia.
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.

Population justification: The global population of Gurney's Eagles was suspected to be between 1,000 and 10,000 individuals (Ferguson-Lees and Christie 2001, 2005) however, there are an estimated 800-900 pairs of Gurney's Eagles in the North Moluccas alone (Røv and Gjershaug 2000) so the higher end of the global estimate may be more realistic (S. Debus in litt. 2016). The number of mature individuals is therefore placed in the band 2,500-9,999. The species is estimated to occur at a density of one pair per 33 km² of land area in the North Moluccas (Røv and Gjershaug 2000).

Trend justification: The species is suspected to be in decline owing to habitat loss and degradation. For example, across mainland Papua New Guinea, 1.2% of forest was lost, and 2.4% of forest logged between 2002-2014 (Bryan and Shearman 2015). This translates to approximately 3.9% forest loss and 7.8% forest logging over the course of three generations (40 years) (Bird et al. 2020). Based on a long generation length and marginal forest loss and logging estimates therefore, the population is suspected to be undergoing a likely reduction of <10%.

Recommended citation
BirdLife International (2023) Species factsheet: Aquila gurneyi. Downloaded from http://www.birdlife.org on 20/03/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/03/2023.