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.
Critically Endangered | Endangered | Vulnerable |
---|---|---|
- | - | A2c+3c+4c |
Year | Category | Criteria |
---|---|---|
2017 | Vulnerable | A2c+3c+4c |
2016 | Vulnerable | A2c+3c+4c;B1ab(i,ii,iii,v) |
2012 | Vulnerable | A2c+3c+4c;B1ab(i,ii,iii,v) |
2008 | Vulnerable | A2c; A3c; A4c; B1a+b(i,ii,iii,v) |
2005 | Vulnerable | |
2004 | Vulnerable | |
2000 | Vulnerable | |
1996 | Endangered | |
1994 | Endangered | |
1988 | Threatened |
Migratory status | not a migrant | Forest dependency | high |
Land-mass type |
continent |
Average mass | - |
Estimate | Data quality | |
---|---|---|
Extent of Occurrence (breeding/resident) | 31,400 km2 | medium |
Number of locations | 6 | - |
Severely fragmented? | no | - |
Estimate | Data quality | Derivation | Year of estimate | |
---|---|---|---|---|
Population size | 1500-7000 mature individuals | poor | estimated | 2000 |
Population trend | decreasing | poor | suspected | 1998-2008 |
Rate of change over the past 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
Rate of change over the future 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
Rate of change over the past & future 10 years/3 generations (longer of the two periods) | 30-49% | - | - | - |
Generation length | 6.7 years | - | - | - |
Number of subpopulations | 2-100 | - | - | - |
Population justification: The population is estimated to number 2,500-9,999 individuals based on an assessment of known records, descriptions of abundance and range size. This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied. This estimate is equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.
Trend justification: No quantitative data are available for the calculation of population trends; however, the species is suspected to be declining rapidly in line with habitat degradation within its range.
Country/Territory | Presence | Origin | Resident | Breeding visitor | Non-breeding visitor | Passage migrant |
---|---|---|---|---|---|---|
Mexico | extant | native | yes |
Country/Territory | IBA Name |
---|---|
Mexico | Omiltemi |
Mexico | Tlaxiaco |
Habitat (level 1) | Habitat (level 2) | Importance | Occurrence |
---|---|---|---|
Forest | Subtropical/Tropical Moist Montane | major | resident |
Altitude | 1525 - 3500 m | Occasional altitudinal limits |
Threat (level 1) | Threat (level 2) | Impact and Stresses | |||||||
---|---|---|---|---|---|---|---|---|---|
Agriculture & aquaculture | Annual & perennial non-timber crops - Scale Unknown/Unrecorded | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
|
|||||||||
Agriculture & aquaculture | Annual & perennial non-timber crops - Small-holder farming | Timing | Scope | Severity | Impact | ||||
Ongoing | Minority (<50%) | Slow, Significant Declines | Low Impact: 5 | ||||||
|
|||||||||
Biological resource use | Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] | Timing | Scope | Severity | Impact | ||||
Ongoing | Majority (50-90%) | Rapid Declines | Medium Impact: 7 | ||||||
|
|||||||||
Climate change & severe weather | Habitat shifting & alteration | Timing | Scope | Severity | Impact | ||||
Future | Whole (>90%) | Unknown | Unknown | ||||||
|
Recommended citation
BirdLife International (2024) Species factsheet: White-throated Jay Cyanolyca mirabilis. Downloaded from
https://datazone.birdlife.org/species/factsheet/white-throated-jay-cyanolyca-mirabilis on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from
https://datazone.birdlife.org/species/search on 23/12/2024.