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). The population is suspected to be in decline, but the rate of decline is not thought 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.
van Balen, S.; Eaton, J. A.; Rheindt, F. E. 2011. Biology, taxonomy and conservation status of the Short-tailed Green Magpie Cissa [t.] thalassina from Java. Bird Conservation International.
Cissa thalassina has been split into Cissa thalassina and C. jefferyi following van Balen et al. (2011).
Further web sources of information
Explore HBW Alive for further information on this species
Text account compilers
BirdLife International (2014) Species factsheet: Cissa jefferyi. Downloaded from http://www.birdlife.org on 01/10/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 01/10/2014.
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.
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|Current IUCN Red List category||Least Concern|
|Family||Corvidae (Crows and jays)|
|Species name author||Sharpe, 1888|
|Population size||mature individuals|
|Distribution size (breeding/resident)||78,500 km2|
|Links to further information|
|- Additional Information on this species|