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The site was identified as internationally important for bird conservation 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 List	Season (year/s of estimate)	Size	IBA criteria
Sharp-tailed Tyrant Culicivora caudacuta	LC	resident (1998–2007)	present	A1
Strange-tailed Tyrant Alectrurus risora	VU	resident (1998–2007)	present	A1
Ochre-breasted Pipit Anthus nattereri	VU	resident (1998–2007)	present	A1
Chestnut Seedeater Sporophila cinnamomea	VU	breeding (1998–2007)	present	A1, A2, A3
Marsh Seedeater Sporophila palustris	EN	passage (1998–2007)	present	A1, A2, A3

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2007. The most recent assessment (2011) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	whole of popul­ation/area (>90%)	rapid decline (>30% over 3 gener­ations)	very high

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Little/none of area covered (<10%)	No management planning has taken place	Very little or no conservation action taking place	very low

Habitat	% of IBA	Habitat detail
Grassland	47	Campo grassland
Shrubland	26	Scrub
Forest	21	Tropical deciduous forest
Savanna	2	Savanna
Wetlands (inland)	2

Land use	% of IBA
agriculture	2

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Estero Ñu Guazú - General Artigas (Paraguay). Downloaded from https://datazone.birdlife.org/site/factsheet/estero-ñu-guazú--general-artigas-iba-paraguay on 23/12/2024.