• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further resources

Year of most recent IBA criteria assessment: 2021

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population at site	IBA criteria triggered
Horned Grebe Podiceps auritus	VU	winter	2017	37 individuals	A1
Ridgway's Rail Rallus obsoletus	NT	resident	2014	45	B1a
Reddish Egret Egretta rufescens	NT	resident	2011	71 individuals	B1a
Double-crested Cormorant Nannopterum auritus	LC	resident	2013	4,008 individuals	B3a
Wilson's Plover Charadrius wilsonia	LC	winter	2011	1,540	A4, B3a
Snowy Plover Charadrius nivosus	NT	winter	2011	110 individuals	B1a, B3a
Black Skimmer Rynchops niger	LC	winter	2013	302 individuals	B3a
Heermann's Gull Larus heermanni	NT	resident	2014	1,320 individuals	B1a
Elegant Tern Thalasseus elegans	NT	winter	2010	7,000 individuals	A4, B1a, B3a
Royal Tern Thalasseus maximus	LC	winter	2010	500 individuals	B3a
A4iii Species group - seabirds	n/a	-	2010	22,002 individuals	B3b

Note: The current IUCN Red List category may differ from the category that was valid at the time of IBA criteria assessment.

For more information about the IBA criteria, please click here

IUCN Habitat	Habitat detail	Extent (% of site)
Forest	Mangrove	-
Marine Coastal/Supratidal		-

For further information about the IUCN habitat classification, please click here.

Land-use	Extent (% of site)
fisheries/aquaculture	-

For further information about the land-use classification, please click here.

Privada
Comunal/Ejidal
Zona Federal Marítimo Terretre

---

Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Estero Santa Cruz . Downloaded from http://datazone.birdlife.org/site/factsheet/44539 on 06/06/2023.