LC
Eastern Bluebird Sialia sialis



Taxonomy

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
2021 Least Concern
2018 Least Concern
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status full migrant Forest dependency Medium
Land mass type Average mass 28 g
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 14,800,000 medium
Extent of Occurrence non-breeding (km2) 9,410,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 23000000 poor inferred 2019
Population trend Increasing inferred -
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 - - -
Percentage in largest subpopulation - - -

Population justification: The global population is inferred to number 23 million mature individuals (Partners in Flight 2019).

Trend justification: The species is increasing at an average rate of 2% per year (Partners in Flight 2019). Short-term trends suggest that the population in North America increased by 11% over the past ten years (Pardieck et al. 2018)


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Bahamas V Extant
Belize V Extant
Bermuda (to UK) N Extant Yes
Canada N Extant Yes Yes
Cuba V Extant
El Salvador N Extant Yes
Guatemala N Extant Yes
Honduras N Extant Yes
Mexico N Extant Yes Yes
Nicaragua N Extant Yes
St Pierre and Miquelon (to France) V Extant
USA N Extant Yes Yes Yes
Virgin Islands (to USA) V Extant

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

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable non-breeding
Artificial/Terrestrial Plantations suitable breeding
Forest Boreal suitable breeding
Forest Subtropical/Tropical Moist Montane major non-breeding
Forest Subtropical/Tropical Moist Montane major breeding
Forest Temperate major breeding
Shrubland Subtropical/Tropical High Altitude suitable non-breeding
Shrubland Subtropical/Tropical High Altitude suitable breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands suitable breeding
Altitude 700 - 2700 m Occasional altitudinal limits  

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - International Non-trivial Recent

Recommended citation
BirdLife International (2022) Species factsheet: Sialia sialis. Downloaded from http://www.birdlife.org on 10/12/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 10/12/2022.