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The site was identified as important in 2007 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species') at the site:

Species	Red List1	Season	Year(s)	Size	IBA criteria
West Indian Whistling-duck Dendrocygna arborea	NT	breeding	2006	30 individuals	A1
Masked Duck Nomonyx dominicus	LC	resident	2005	50-249 individuals	B4i
Puerto Rican Mango Anthracothorax aurulentus	LC	resident	2005	unknown	A2
Green-throated Carib Eulampis holosericeus	LC	resident	2005	unknown	A2
Puerto Rican Emerald Riccordia maugaeus	LC	resident	2005	unknown	A2
Puerto Rican Lizard-cuckoo Coccyzus vieilloti	LC	resident	2007	unknown	A2
Roseate Tern Sterna dougallii	LC	breeding	2004	250 individuals	A4i
Puerto Rican Owl Gymnasio nudipes	LC	resident	2007	unknown	A2
Puerto Rican Tody Todus mexicanus	LC	resident	2005	unknown	A2
Puerto Rican Woodpecker Melanerpes portoricensis	LC	resident	2007	unknown	A2
Puerto Rican Flycatcher Myiarchus antillarum	LC	resident	2005	unknown	A2
Puerto Rican Vireo Vireo latimeri	LC	resident	2005	unknown	A2
Pearly-eyed Thrasher Margarops fuscatus	LC	resident	2007	unknown	A2
Puerto Rican Euphonia Euphonia sclateri	LC	resident	2005	unknown	A2
Adelaide's Warbler Setophaga adelaidae	LC	resident	2005	unknown	A2
Puerto Rican Spindalis Spindalis portoricensis	LC	resident	2005	unknown	A2
Puerto Rican Bullfinch Melopyrrha portoricensis	VU	resident	2005	unknown	A2

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2014) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happening now	majority/most of area/population (50-90%)	very rapid to severe deterioration	very high
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Biological resource use	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Climate change and severe weather	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Agricultural expansion and intensification	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Some of site covered (10-49%)	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
-	Reserva Natural Hacienda La Esperanza	Private Conservation	11
1979	Reserva Natural Hacienda La Esperanza	Natural Reserve	11
1987	Hacienda La Esperanza	Natural Reserve	4
1992	Cueva del Indio	Natural Reserve	1
1998	Reserva Natural Caño Tiburones De Arecibo	National Conservation Area	22
1998	Caño Tiburones	Natural Reserve	17
1998	Reserva Natural Cano Tiburones	Natural Reserve	27

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Ciudadanos en Defensa del Ambiente, Fundación de Conservación	0

For more information on BirdLife's work with Local Conservation Groups, please click here.

Habitat1	Habitat detail	% of IBA
Marine Coastal/Supratidal		major (>10)
Marine Neritic		major (>10)
Forest	Mangrove	-
Introduced vegetation		-
Marine Intertidal		-
Shrubland		-

1. IUCN Habitat classification.

Land use	% of IBA
hunting	-
rangeland/pastureland	-
nature conservation and research	-
urban/industrial/transport	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Caño Tiburones (Puerto Rico (to USA)). Downloaded from https://datazone.birdlife.org/site/factsheet/caño-tiburones-iba-puerto-rico-(to-usa) on 22/11/2024.