Puerto Rican Lizard-cuckoo Coccyzus vieilloti


Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions 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
2022 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 not a migrant Forest dependency Medium
Land mass type Average mass 82 g

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 9,900 medium
Extent of Occurrence breeding/resident (km2) 9,950
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 2200-3000 medium inferred 2021
Population trend Stable 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 1 - - -
Percentage in largest subpopulation 100 - - -

Population justification: The species is described as 'rare' (Stotz et al. 1996). Surveys in mangrove forests found the species at a density of 0.1 individuals/ha (Kendrick 2020). Assuming that the species occurs at this density across forested habitat within the entire range (330,000-460,000 ha; Global Forest Watch 2021, using Hansen et al. [2013] data and methods disclosed therein), the population may number 3,300-4,600 individuals. This roughly equates to 2,200-3,000 mature individuals.

Trend justification: Despite hurricanes Irma and Maria causing major damage to forested habitat in Puerto Rico in 2017, the species does not appear to be negatively affected by the impacts: Surveys after the hurricanes found an increase in the rate of occupancy and the number of sites occupied (Lloyd et al. 2019). Precautionarily, the population is assessed as stable.

Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Puerto Rico (to USA) N Extant Yes
Virgin Islands (to USA) V Extant

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Puerto Rico (to USA) El Yunque
Puerto Rico (to USA) Cordillera Central
Puerto Rico (to USA) Maricao and Susúa
Puerto Rico (to USA) Karso del Sur
Puerto Rico (to USA) Sierra Bermeja and Laguna Cartagena
Puerto Rico (to USA) Karso del Norte
Puerto Rico (to USA) Ceiba and Naguabo
Puerto Rico (to USA) Caño Tiburones
Puerto Rico (to USA) Acantilados del Noroeste
Puerto Rico (to USA) Suroeste
Puerto Rico (to USA) Carite
Puerto Rico (to USA) Este Central
Puerto Rico (to USA) Humacao

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Plantations suitable resident
Forest Subtropical/Tropical Dry major resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 0 - 1040 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2022) Species factsheet: Coccyzus vieilloti. Downloaded from on 27/11/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from on 27/11/2022.