• Summary
• Text
• Details
• Map
• Resources

The site was identified as internationally important for bird conservation in 2021 because it was regularly supporting significant populations of the species listed below, meeting IBA criteria.

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

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Northern Bobwhite Colinus virginianus	NT	resident (2020)	48 individuals	B1a
American White Pelican Pelecanus erythrorhynchos	LC	winter (2018)	1,685 individuals	B3a
Eastern Meadowlark Sturnella magna	NT	resident (2017)	170 individuals	B1a

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2021. The most recent assessment (2022) is shown below.

State (condition of the key species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Forest	good (>90%)	good (>90%)	favourable

Pressure (threats to the key species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happen­ing now	some of popul­ation/area (10–49%)	moderate deteri­oration (10–30% in 3 gener­ations)	high
Natural system modifications	happen­ing now	some of popul­ation/area (10–49%)	moderate deteri­oration (10–30% in 3 gener­ations)	high
Transportation and service corridors	happen­ing now	some of popul­ation/area (10–49%)	slow deteri­oration (1–10% over 3 gener­ations)	medium
Residential and commercial development	happen­ing now	few individ­uals/small area (<10%)	no deteri­oration (<1% over 3 gener­ations)	low
Biological resource use	happen­ing now	few individ­uals/small area (<10%)	no deteri­oration (<1% over 3 gener­ations)	low
Pollution	happen­ing now	few individ­uals/small area (<10%)	no deteri­oration (<1% over 3 gener­ations)	low
Energy production and mining	likely in long term (beyond 4 years)	few individ­uals/small area (<10%)	slow deteri­oration (1–10% over 3 gener­ations)	low

Response (conservation actions taken for the key species and/or their habitats)
Designation	Planning	Action	Result
Some of site covered (10–49%)	A compre­hensive and appropriate manage­ment plan exists that aims to maintain or improve the popul­ations of qualify­ing bird species	The conservation measures needed for the site are being comprehensively and effectively implemented	medium

Habitat	% of IBA	Habitat detail
Forest	12	Mangrove

Land use	% of IBA
agriculture	74
forestry	12
urban/industrial/transport	1

Tenencia de la tierra: Ejidal y federal.

---

Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Humedales de Alvarado (Mexico). Downloaded from https://datazone.birdlife.org/site/factsheet/humedales-de-alvarado-iba-mexico on 19/01/2025.