LC
Violet-green Swallow Tachycineta thalassina



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
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 Low
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 10,900,000 medium
Extent of Occurrence non-breeding (km2) 2,310,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Increasing estimated -
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 - - -
Generation length (yrs) 4.3 - - -

Trend justification: This species has undergone a small or statistically insignificant increase over the last 40 years in North America (data from Breeding Bird Survey and/or Christmas Bird Count: Butcher and Niven 2007).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Canada N Extant
Colombia N Extant
Costa Rica N Extant
El Salvador N Extant
Guatemala N Extant
Honduras N Extant
Mexico N Extant
Nicaragua N Extant Yes
Panama V Extant
USA N Extant Yes

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

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Desert Hot suitable breeding
Forest Subtropical/Tropical Moist Montane suitable non-breeding
Forest Temperate major breeding
Grassland Subtropical/Tropical Dry suitable breeding
Grassland Subtropical/Tropical Dry suitable non-breeding
Grassland Temperate suitable breeding
Marine Intertidal Mud Flats and Salt Flats suitable non-breeding
Rocky areas (eg. inland cliffs, mountain peaks) suitable breeding
Shrubland Subtropical/Tropical Dry suitable breeding
Altitude 0 - 4000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2022) Species factsheet: Tachycineta thalassina. Downloaded from http://www.birdlife.org on 17/08/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 17/08/2022.