LC
Whistling Hawk-cuckoo Hierococcyx nisicolor



Taxonomy

Taxonomic note
Hierococcyx fugax, H. nisicolor, H. pectoralis and H. hyperythrus (del Hoyo and Collar 2014) were previously placed in the genus Cuculus and lumped as C. fugax following Sibley and Monroe (1990, 1993).

Taxonomic source(s)
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. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.
King, B. F. 2002. The Hierococcyx fugax, Hodgson's Hawk Cuckoo, complex. Bulletin of the British Ornithologists' Club 122: 74-80.
King, B. F. 2002. The Hierococcyx fugax, Hodgson's Hawk Cuckoo, complex. Bulletin of the British Ornithologists' Club 122: 74-80.

IUCN Red list criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2014 Least Concern
Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type Average mass 79.69999695 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 3,980,000
Extent of Occurrence non-breeding (km2) 7,720,000
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 7 - - -

Population justification: The global population size has not been quantified, but the species is reported to be uncommon to rare throughout its range (del Hoyo et al. 1997).

Trend justification: The population is suspected to be in decline owing to ongoing habitat destruction and fragmentation, however declines are not thought to be rapid since the species appears to be highly tolerant of habitat degradation.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Bangladesh U Presence Uncertain
Bhutan N Extant Yes
Cambodia N Extant Yes
China (mainland) N Extant Yes
India N Extant Yes
Indonesia N Extant Yes
Laos N Extant Yes
Malaysia N Extant Yes
Myanmar N Extant Yes
Nepal N Extant Yes
Singapore N Extant Yes
Thailand N Extant Yes
Vietnam N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable breeding
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Moist Lowland suitable breeding
Forest Subtropical/Tropical Moist Lowland suitable non-breeding
Forest Subtropical/Tropical Moist Montane suitable resident
Forest Temperate suitable non-breeding
Forest Temperate suitable breeding
Altitude 600 - 2800 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2019) Species factsheet: Hierococcyx nisicolor. Downloaded from http://www.birdlife.org on 20/06/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 20/06/2019.