NT
Tufted Jay Cyanocorax dickeyi



Taxonomy

Taxonomic note

Taxonomic source(s)
AOU. 1998. Check-list of North American birds. American Ornithologists' Union, Washington, D.C.
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.
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.
Stotz, D. F.; Fitzpatrick, J. W.; Parker, T. A.; Moskovits, D. K. 1996. Neotropical birds: ecology and conservation. University of Chicago Press, Chicago.

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

Red List history
Year Category Criteria
2016 Near Threatened B1ab(ii,iii,v);C2a(i)
2013 Near Threatened B1ab(ii,iii,v);C2a(i)
2012 Near Threatened B1ab(ii,iii,v);C2a(i)
2008 Near Threatened B1a+b(i,ii,iii,v)
2004 Near Threatened
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Near Threatened
Species attributes

Migratory status not a migrant Forest dependency High
Land mass type Land-mass type - continent
Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 19,300 medium
Number of locations 11-100 -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 10000-19999 medium estimated 2012
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) 1-19 - - -
Decline (10 years/3 generation past and future) 1-9 - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 6.1 - - -

Population justification: BirdLife International estimates the species's EOO at 13,400 km2, based on information provided by Lammertink et al. (1996). It is estimated that 65-90% of the species range is occupied by home ranges (M. Lammertink in litt. 2010) , resulting in an estimate of 8,700-12,000 km2 of occupied habitat. An estimate of 3 km2 per territory is derived from Croisin (1967) by M. Lammertink (in litt. 2010), suggesting that there are 2,900-4,000 groups in total. Each group has two adults and 9.3 individuals (n=7), implying that there are 5,800-8,000 breeding adults within a population of 27,000-37,200 individuals. Based on the supposition that there are more than two mature individuals per group, the population is placed in the band for 10,000-19,999 mature individuals.

Trend justification: Although some populations may be stable, the overall population is suspected to be in slow decline (M. Lammertink in litt. 2010, C. Villar Rodríguez et al. in litt. 2012) owing to the species's susceptibility to forest destruction (Madge and Burn 1993). The rate of decline may accelerate over the next three generations (C. Villar Rodríguez et al. in litt. 2012).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Mexico N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Mexico Corredor de Barrancas de la Sierra Madre Occidental.
Mexico Quebradas de Sinaloa, Nayarit y Durango.
Mexico River Presidio- New town
Mexico Selvas Naryaritas
Mexico The Bufas

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry major resident
Forest Subtropical/Tropical Moist Montane major resident
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable resident
Altitude 1350 - 2150 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops Timing Scope Severity Impact
Future Minority (<50%) Negligible declines No/Negligible Impact: 2
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Annual & perennial non-timber crops Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species mortality
Biological resource use Logging & wood harvesting Timing Scope Severity Impact
Future Minority (<50%) Negligible declines No/Negligible Impact: 2
Stresses
Ecosystem degradation, Ecosystem conversion
Climate change & severe weather Droughts Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Indirect ecosystem effects, Ecosystem degradation

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Sport Whole Adults and juveniles Wild Non-trivial Recent

Recommended citation
BirdLife International (2018) Species factsheet: Cyanocorax dickeyi. Downloaded from http://www.birdlife.org on 17/12/2018. Recommended citation for factsheets for more than one species: BirdLife International (2018) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/12/2018.