LC
Connecticut Warbler Oporornis agilis



Taxonomy

Taxonomic note

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.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.html#.
SACC. 2006. A classification of the bird species of South America. Available at: #http://www.museum.lsu.edu/~Remsen/SACCBaseline.htm#.

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 Medium
Land mass type Average mass 13.30000019 g
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,500,000 medium
Extent of Occurrence non-breeding (km2) 4,810,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
Population trend Decreasing 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 - - -
Largest subpopulations - - -
Generation length (yrs) 3.5 - - -

Trend justification: This species has undergone a small or statistically insignificant decrease 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
Antigua and Barbuda N Extant
Aruba (to Netherlands) N Extant
Bahamas N Extant
Barbados N Extant
Belize N Extant
Bolivia N Extant
Bonaire, Sint Eustatius and Saba (to Netherlands) N Extant
Brazil N Extant
Canada N Extant
Colombia N Extant
Costa Rica N Extant Yes
Cuba V Extant
Curaçao (to Netherlands) N Extant
Dominica N Extant
Dominican Republic N Extant
Ecuador V Extant
French Guiana N Extant
French Polynesia V Extant
Guadeloupe (to France) N Extant
Haiti N Extant
Honduras N Extant
Jamaica V Extant
Martinique (to France) N Extant
Mexico N Extant Yes
Montserrat (to UK) N Extant
Panama N Extant
Peru N Extant
Puerto Rico (to USA) N Extant
Sint Maarten (to Netherlands) N Extant
St Kitts and Nevis N Extant
St Lucia N Extant
St Vincent and the Grenadines N Extant
Turks and Caicos Islands (to UK) N Extant
USA N Extant Yes
Venezuela N Extant
Virgin Islands (to USA) V Extant

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

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major non-breeding
Forest Temperate suitable breeding
Wetlands (inland) Shrub Dominated Wetlands major breeding
Altitude   Occasional altitudinal limits  

Recommended citation
BirdLife International (2019) Species factsheet: Oporornis agilis. Downloaded from http://www.birdlife.org on 19/06/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 19/06/2019.