VU
Shelley's Eagle-owl Bubo shelleyi



Taxonomy

Taxonomic source(s)
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.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - C2a(i)

Red List history
Year Category Criteria
2018 Vulnerable C2a(i)
2016 Near Threatened C1
2012 Near Threatened C1
2008 Near Threatened C1
2004 Near Threatened
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,450,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 1500-7000 poor suspected 2007
Population trend Decreasing inferred -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations 1-89 - - -
Generation length (yrs) 11.6 - - -

Population justification: This species may require large areas of good quality habitat and occur at low densities (H. Rainey in litt. 2018). Thus it may have a small population, possibly below 10,000 individuals. It is placed in the band 2,500-9,999 individuals, equating to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals, with no subpopulation expected to contain >1,000 mature individuals.

Trend justification: The population is inferred to be declining owing to forest clearance within parts of its range. Deforestation analysis by Tracewski et al. (2016) estimated an annual decline in forest cover within this species’s range to be c.0.2% between 2000 and 2012, which would roughly equate to a decline of 6.4% over three generations (c.35 years). However, the extended anthropogenic impacts on the species, e.g. loss of prey populations due to hunting may be contributing to even higher declines (H. Rainey in litt. 2018). Therefore, while we may be confident in inferring a continuing decline in this species, the rate at which it is declining is uncertain.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Cameroon N Extant Yes
Congo N Extant Yes
Congo, The Democratic Republic of the N Extant Yes
Côte d'Ivoire N Extant Yes
Gabon N Extant Yes
Ghana N Extant Yes
Liberia N Extant Yes
Sierra Leone N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Congo Dimonika Biosphere Reserve
Congo, The Democratic Republic of the Okapi Faunal Reserve
Côte d'Ivoire Mount Nimba Strict Nature Reserve
Côte d'Ivoire Parc National de Taï et Réserve de faune du N'Zo
Gabon Ipassa Strict Nature Reserve
Liberia Lofa-Gola-Mano Complex
Liberia Nimba mountains
Liberia Zwedru
Sierra Leone Gola Forests

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude   Occasional altitudinal limits  

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 Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals - Unintentional effects (species is not the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Competition
Biological resource use Logging & wood harvesting - Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2020) Species factsheet: Bubo shelleyi. Downloaded from http://www.birdlife.org on 27/01/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 27/01/2020.