||Ducula bicolor (Scopoli, 1786)
||Pied Imperial-pigeon, Pied Imperial Pigeon, Pied Imperial-Pigeon
||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.
||Ducula spilorrhoa (del Hoyo and Collar 2014) was previously split as D. spilorrhoa, D. subflavescens and D. constans following Sibley and Monroe (1990, 1993), but D. constans was subsequently lumped with D. spilorrhoa because Christidis and Boles (2008) did not recognize it (an Australian endemic) as a separate species. D. bicolor, D. luctuosa (del Hoyo and Collar 2014, Sibley and Monroe 1990, 1993) and D. spilorrhoa (del Hoyo and Collar 2014) are retained as separate species contra Christidis and Boles (2008), who included constans, spilorrhoa, subflavescens and luctuosa as subspecies of bicolor.
|Red List Category & Criteria:
||Butchart, S. & Symes, A.
||Butchart, S., Ekstrom, J. & Symes, A.
This species has an extremely 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 is very large, and hence does not 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:|
- 2014 – Least Concern (LC)
- 2012 – Least Concern (LC)
- 2009 – Least Concern (LC)
- 2008 – Least Concern (LC)
- 2004 – Least Concern (LC)
- 2000 – Lower Risk/least concern (LR/lc)
- 1994 – Lower Risk/least concern (LR/lc)
- 1988 – Lower Risk/least concern (LR/lc)