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VU
Cape Gannet Morus capensis

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable A2acde+3cde+4acde;B2ab(iii,iv,v) 

IUCN Red List history

Year Category
2012 Vulnerable
2008 Vulnerable
2007 Vulnerable
2004 Vulnerable
2000 Vulnerable
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern

Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type shelf island
Average mass -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals good Estimated 2006
Population trend Decreasing good -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 20.2 - - -
Population justification: The total breeding population in 2004-2006 was c.150,000 pairs.
Trend justification: The total breeding population declined by 1.14% per year over the 49 years between 1956-1957 and 2005-2006 (Kemper et al. 2007), equivalent to c.47% over 60.6 years (three 20.2-year generations).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Angola Native Extant       Yes
Argentina Vagrant Extant   Yes    
Australia Native Extant Yes      
Benin Unknown Extant        
Brazil Vagrant Extant   Yes    
Cameroon Native Extant       Yes
Chile Vagrant Extant   Yes    
Congo Native Extant       Yes
Congo, The Democratic Republic of the Native Extant       Yes
Equatorial Guinea Native Extant       Yes
Gabon Native Extant       Yes
Ghana Vagrant Extant   Yes    
Kenya Unknown Extant        
Mozambique Native Extant   Yes    
Namibia Native Extant Yes      
Nigeria Native Extant       Yes
Oman Vagrant Extant   Yes    
Peru Vagrant Extant        
São Tomé e Príncipe Native Extant       Yes
South Africa Native Extant       Yes
Tanzania Native Extant   Yes    
Togo Unknown Extant        

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Angola Iona National Park site factsheet
Angola Mussulo site factsheet
Angola Quiçama site factsheet
Mozambique Pomene site factsheet
Namibia Ichaboe Island site factsheet
Namibia Mercury Island site factsheet
Namibia Possession Island site factsheet
South Africa Algoa Bay Island Nature Reserve site factsheet
South Africa Bird Island site factsheet
South Africa West Coast National Park and Saldanha Bay islands site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Marine Coastal/Supratidal Sea Cliffs and Rocky Offshore Islands major resident
Marine Neritic Macroalgal/Kelp major resident
Marine Neritic Pelagic major resident
Marine Neritic Seagrass (Submerged) major resident
Marine Neritic Subtidal Loose Rock/pebble/gravel major resident
Marine Neritic Subtidal Rock and Rocky Reefs major resident
Marine Neritic Subtidal Sandy major resident
Marine Neritic Subtidal Sandy-Mud major resident
Marine Oceanic Epipelagic (0-200m) major resident
Marine Oceanic Mesopelagic (200-1000m) major resident
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Fishing & harvesting aquatic resources / Unintentional effects: (large scale) [harvest] Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Indirect ecosystem effects, Species mortality
Biological resource use Hunting & trapping terrestrial animals / Intentional use (species is the target) Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species mortality
Climate change & severe weather Storms & flooding Timing Scope Severity Impact
Ongoing Whole (>90%) Negligible declines Medium Impact: 6
Stresses
Ecosystem degradation, Reduced reproductive success
Energy production & mining Mining & quarrying Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance Work & other activities Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Species disturbance, Reduced reproductive success
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Competition
Pollution Industrial & military effluents / Oil spills Timing Scope Severity Impact
Past, Likely to Return Majority (50-90%) Rapid Declines Past Impact
Stresses
Species mortality

Utilisation

Purpose Primary form used Life stage used Source Scale Level Timing
Food (human) Whole Adults and juveniles Wild Subsistence, National Non-trivial Historical
Pets Whole Adults and juveniles Wild International Non-trivial Recent

Recommended citation
BirdLife International (2014) Species factsheet: Morus capensis. Downloaded from http://www.birdlife.org on 30/08/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 30/08/2014.

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 Sulidae (Gannets, Boobies)
Species name author (Lichtenstein, 1823)
Population size mature individuals
Population trend Decreasing
Distribution size (breeding/resident) -
Country endemic? No
Links to further information
- Summary information on this species