• Summary
• Text account
• Data table and detailed info
• Map
• Reference and further 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 ('triggering') IBA criteria.

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

Species	Red List	Season (year/s of estimate)	Size	IBA criteria
Ruddy Duck Oxyura jamaicensis	LC	resident (2015)	30,000–56,808 birds	B3a
Northern Shoveler Spatula clypeata	LC	winter (2013)	82,786	A4, B3a
Cinnamon Teal Spatula cyanoptera	LC	winter (2013)	4,578 birds	A4, B3a
Clark's Grebe Aechmophorus clarkii	LC	resident (2015)	25 birds	B3a
Mexican Rail Rallus tenuirostris	NT	resident (2013)	40 birds	B1a
Snowy Plover Charadrius nivosus	NT	breeding (2013)	596 birds	A4, B1a, B3a
Baird's Sandpiper Calidris bairdii	LC	winter (2012)	5,981 birds	A4, B3a
Least Sandpiper Calidris minutilla	NT	passage (-)	min 7,000 birds	A4, B3a
Short-billed Dowitcher Limnodromus griseus	VU	winter (2012)	2,762 birds	A4, B3a
Long-billed Dowitcher Limnodromus scolopaceus	NT	winter (2013)	4,289 birds	A4, B3a
Wilson's Phalarope Steganopus tricolor	LC	winter (2011)	60,398 birds	A4, B3a
Wilson's Phalarope Steganopus tricolor	LC	passage (2011)	min 62,000 birds	A4, B3a
Common Gull-billed Tern Gelochelidon nilotica	LC	- (2011)	450 birds	B3a
A4iii Species group - waterbirds	n/a	- (2011–2015)	191,390–218,198 birds	B3b

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 trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Wetlands (inland)	poor (40–69%)	poor (40–69%)	very poor

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happe­ning now	most of popul­ation/area (50–90%)	slow decline (1–10% over 3 gener­ations)	high
Biological resource use	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	high
Invasive and other problematic species and genes	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	high
Climate change and severe weather	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% over 3 gener­ations)	high
Transportation and service corridors	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Natural system modifications	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Agricultural expansion and intensification	happe­ning now	few indivi­duals/small area (<10%)	slow decline (1–10% over 3 gener­ations)	low
Residential and commercial development	likely in short term (<4 years)	few indivi­duals/small area (<10%)	no or slight decline (<1% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Whole area (>90%) covered by appropriate conservation designation	No management plan exists, but the management planning process has begun	The conservation measures needed for the site are being compre­hensively and effectively implemented	medium

Habitat	% of IBA	Habitat detail
Wetlands (inland)	33	Water-fringe vegetation

Land use	% of IBA
urban/industrial/transport	15
agriculture	9

Mexico’s National Water Commission (CNA)

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lago de Texcoco (Mexico). Downloaded from https://datazone.birdlife.org/site/factsheet/lago-de-texcoco-iba-mexico on 22/12/2024.