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Ethiopian Bush-crow Zavattariornis stresemanni

IUCN Red List Criteria

Critically Endangered  
Endangered A2bc+3bc+4bc 
Vulnerable A2bc+3bc+4bc;B1ab(ii,iii,v) 

IUCN Red List history

Year Category
2012 Endangered
2008 Endangered
2005 Endangered
2004 Vulnerable
2000 Vulnerable
1996 Vulnerable
1994 Vulnerable
1988 Threatened

Species attributes

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

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 4,600 medium
Number of locations 6-10 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 10000-19999 poor Estimated 2011
Population trend Decreasing medium -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 6.7 - - -
Population justification: Based on nest-counts, Donald et al. (2012) estimate a global population of at least 9,000 breeding pairs, however, as active nests typically have several nest-helpers there may also be a significant additional non-breeding population. It is placed here in the band 10,000-19,999 mature individuals, but may well prove to be larger.
Trend justification: Encounter rates in the Yavello Wildlife Sanctuary declined by 80% between 1989 and 2003 (Borghesio and Giannetti 2005), which covers a large part of the species's range, and declines are presumed to be continuing, owing to on-going habitat conversion and degradation. The overall rate of decline is estimated to be very rapid. More recent studies suggest that the species's population in fact may be stable (P. Donald in litt. 2012), however a rapid ongoing decline is retained here until this can be confirmed.

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
Ethiopia Native Extant       Yes

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
Ethiopia Yabello Sanctuary site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Savanna Dry major resident
Shrubland Subtropical/Tropical Dry major resident
Altitude 1700 - 1700 m 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%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching / Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting / Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Rapid Declines High Impact: 8
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Cow (Bos taurus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Sheep (Ovis aries) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation
Natural system modifications Fire & fire suppression / Supression in fire frequency/intensity Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Zavattariornis stresemanni. Downloaded from http://www.birdlife.org on 21/10/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/10/2014.

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 Endangered
Family Corvidae (Crows and jays)
Species name author Moltoni, 1938
Population size 10000-19999 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 4,600 km2
Country endemic? Yes
Links to further information
- Summary information on this species