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Ceblepyris caesius 

Scope: Global
Language: English
Amended version
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Passeriformes Campephagidae

Scientific Name: Ceblepyris caesius Lichtenstein, 1823
Common Name(s):
English – Grey Cuckooshrike, Grey Cuckoo-shrike
French – Echenilleur gris
Synonym(s):
Coracina caesia (Lichtenstein, 1823)
Taxonomic Source(s): del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2017
Date Assessed: 2016-10-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Butchart, S., Ekstrom, J., Wheatley, H.
Justification:
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Previously published Red List assessments:

Geographic Range [top]

Countries occurrence:
Native:
Burundi; Cameroon; Congo, The Democratic Republic of the; Equatorial Guinea; Ethiopia; Kenya; Malawi; Mozambique; Nigeria; Rwanda; South Africa; South Sudan; Sudan; Swaziland; Tanzania, United Republic of; Uganda; Zimbabwe
Additional data:
♦ Continuing decline in area of occupancy (AOO):Unknown
♦ Extreme fluctuations in area of occupancy (AOO):No♦ Estimated extent of occurrence (EOO) - km2:12000000
♦ Continuing decline in extent of occurrence (EOO):Unknown♦ Extreme fluctuations in extent of occurrence (EOO):No
♦ Continuing decline in number of locations:Unknown
♦ Extreme fluctuations in the number of locations:No
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The global population size has not been quantified, but the species is reported to be common in the north of its range and uncommon in the south (Keith et al. 1992).

Trend Justification:  This population is suspected to be in decline owing to habitat destruction (del Hoyo et al. 2005).
Current Population Trend:Decreasing
Additional data:
♦ Number of mature individuals:Unknown♦ Continuing decline of mature individuals:Unknown
♦ Extreme fluctuations:No♦ Population severely fragmented:No
♦ Continuing decline in subpopulations:Unknown
♦ Extreme fluctuations in subpopulations:No♦ All individuals in one subpopulation:No

Habitat and Ecology [top]

Amended [top]

Amended reason: EOO updated. Added a Facilitator.
Citation: BirdLife International. 2017. Ceblepyris caesius (amended version of assessment). The IUCN Red List of Threatened Species 2017: e.T22706543A118705121. . Downloaded on 22 April 2018.
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