LC
Grey Butcherbird Cracticus torquatus



Taxonomy

Taxonomic note
Cracticus torquatus and C. argenteus (del Hoyo and Collar 2016) were previously lumped as C. torquatus following Christidis & Boles (2008) and Sibley & Monroe (1990, 1993).

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.

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

Red List history
Year Category Criteria
2016 Least Concern
Species attributes

Migratory status not a migrant Forest dependency Medium
Land mass type Average mass 88.82666779 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 8,870,000
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 Unknown not applicable -
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) 6.3 - - -

Population justification: The global population size has not been quantified, but the species is described as common (Morcombe 2000).

Trend justification: The trend direction for this population is difficult to determine owing to the positive and negative processes affecting the species (Higgins et al. 2006).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Australia 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 Arable Land suitable resident
Artificial/Terrestrial Rural Gardens suitable resident
Artificial/Terrestrial Urban Areas suitable resident
Forest Subtropical/Tropical Dry suitable resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Swamp suitable resident
Forest Temperate major resident
Savanna Dry major resident
Shrubland Mediterranean-type Shrubby Vegetation suitable resident
Shrubland Temperate major resident
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2019) Species factsheet: Cracticus torquatus. Downloaded from http://www.birdlife.org on 17/02/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/02/2019.