LC
Worm-eating Warbler Helmitheros vermivorum



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.
SACC. 2005 and updates. 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
2021 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 -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 2,520,000 medium
Extent of Occurrence non-breeding (km2) 4,980,000 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 780000 poor estimated 2019
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 - - -

Population justification: The global population is estimated to number 780,000 mature individuals (Partners in Flight 2019).

Trend justification: The population has been roughly stable over the past five decades (Partners in Flight 2019). Short-term trends however suggest that the species is now increasing at a rate of 12% over the past ten years, though this value is non-significant (Pardieck et al. 2018).


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Anguilla (to UK) V Extant Yes
Antigua and Barbuda V Extant Yes
Bahamas N Extant Yes
Belize N Extant Yes
Canada V Extant Yes
Cayman Islands (to UK) N Extant Yes
Colombia V Extant Yes
Costa Rica N Extant Yes
Cuba N Extant Yes
Dominican Republic N Extant Yes
El Salvador N Extant Yes Yes
Guadeloupe (to France) V Extant Yes
Guatemala N Extant Yes Yes
Haiti N Extant Yes
Honduras N Extant Yes Yes
Jamaica N Extant Yes
Martinique (to France) V Extant Yes
Mexico N Extant Yes Yes
Nicaragua N Extant Yes Yes
Panama N Extant Yes
Puerto Rico (to USA) N Extant Yes
St Pierre and Miquelon (to France) V Extant
Turks and Caicos Islands (to UK) N Extant
USA N Extant Yes Yes
Venezuela V Extant Yes
Virgin Islands (to UK) N Extant Yes
Virgin Islands (to USA) N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Jamaica Rose Hall
Bahamas Harrold and Wilson Ponds National Park
Bahamas South Tarpum Bay
Bahamas Governor's Harbour
Puerto Rico (to USA) Cordillera Central

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level major non-breeding
Forest Temperate major breeding
Altitude 0 - 1500 m Occasional altitudinal limits (max) 2000 m

Recommended citation
BirdLife International (2022) Species factsheet: Helmitheros vermivorum. Downloaded from http://www.birdlife.org on 28/06/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 28/06/2022.