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Florida Scrub-jay Aphelocoma coerulescens

IUCN Red List Criteria

Critically Endangered  
Endangered  
Vulnerable A2cde+3cde+4cde;B1ab(i,ii,iii,iv,v);C1+2a(i) 

IUCN Red List history

Year Category
2012 Vulnerable
2008 Vulnerable
2004 Vulnerable
2000 Vulnerable
1994 Not Recognised
1988 Not Recognised

Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 6,900 medium
Number of locations 11-100 -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 4000-6000 good Estimated 2010
Population trend Decreasing poor -
Number of subpopulations 2-100 - - -
Largest subpopulation 251-1000 - - -
Generation length (yrs) 7.6 - - -
Population justification: The breeding population was 4,000 pairs in 1993 (Woolfenden and Fitzpatrick 1996, G. E. Woolfenden in litt. 1998), but has decline by >25% since then (Boughton and Bowman 2011) and is now estimated at c.3,000 family groups (R. Bowman in litt. 2012). In many areas, average group size is below three, thus the global population is suspected to be 6,000-9,000 individuals, roughly equivalent to 4,000-6,000 mature individuals.
Trend justification: The species suffered a decline of >25% during 1992-2010 (Boughton and Bowman 2011) and this decline is suspected to be continuing, owing to current management strategies and the on-going impacts of development in Florida leading to habitat conversion and fire suppression (which causes habitat degradation), compounded by edge effects (Breininger et al. 2009, 2010, Johnson et al. 2011).

Country/Territory distribution

Country/Territory Occurrence status Presence Breeding Non-breeding Passage Resident
USA Native Extant Yes      

Important Bird Areas where this species has triggered the IBA criteria

Country/Territory IBA Name IBA link
USA Avon Park Air Force Range-Bombing Range Ridge site factsheet
USA Brevard Scrub Ecosystem site factsheet
USA Central Pasco site factsheet
USA Fisheating Creek Watershed site factsheet
USA Lake Wales Ridge site factsheet
USA Ocala National Forest-Lake George site factsheet
USA Oscar Scherer State Park site factsheet
USA St Sebastian River State Buffer Preserve site factsheet
USA Withlacoochee-Panasoffkee-Big Scrub site factsheet

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Shrubland Subtropical/Tropical Dry major resident
Altitude 0 - 3300 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops / Agro-industry farming Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Hunting & trapping terrestrial animals / Persecution/control Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Species mortality
Climate change & severe weather Droughts Timing Scope Severity Impact
Past, Likely to Return Majority (50-90%) Slow, Significant Decline Past Impact
Stresses
Ecosystem degradation, Reduced reproductive success
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Bahiagrass (Paspalum notatum) Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
Stresses
Ecosystem degradation
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Domestic Cat (Felis catus) Timing Scope Severity Impact
Ongoing Majority (50-90%) Negligible declines Low Impact: 5
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Fire Ant (Solenopsis geminata) Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Invasive non-native/alien species/diseases / Yellow Rat Snake (Elaphe obsoleta) Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Reduced reproductive success, Species mortality
Invasive and other problematic species, genes & diseases Problematic native species/diseases Timing Scope Severity Impact
Ongoing Minority (<50%) No decline Low Impact: 4
Stresses
Species mortality
Invasive and other problematic species, genes & diseases Viral/prion-induced diseases / West Nile Virus (Flaviviridae) Timing Scope Severity Impact
Ongoing Majority (50-90%) Unknown Unknown
Stresses
Species mortality
Natural system modifications Fire & fire suppression / Supression in fire frequency/intensity Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation
Residential & commercial development Commercial & industrial areas Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Decline Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Transportation & service corridors Roads & railroads Timing Scope Severity Impact
Ongoing Minority (<50%) Negligible declines Low Impact: 4
Stresses
Species mortality

Utilisation

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

Recommended citation
BirdLife International (2014) Species factsheet: Aphelocoma coerulescens. Downloaded from http://www.birdlife.org on 24/07/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/07/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Vulnerable
Family Corvidae (Crows and jays)
Species name author (Bosc, 1795)
Population size 4000-6000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 6,900 km2
Country endemic? Yes
Links to further information
- Summary information on this species