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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
Strange-tailed Tyrant Alectrurus risora	VU	resident (1998–2007)	uncommon	A1
Chestnut Seedeater Sporophila cinnamomea	VU	passage (1998–2007)	rare	A1
Marsh Seedeater Sporophila palustris	EN	passage (1998–2007)	rare	A1

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
Transportation and service corridors	happe­ning now	most of popul­ation/area (50–90%)	rapid decline (>30% over 3 gener­ations)	very high
Agricultural expansion and intensification	happe­ning now	some of popul­ation/area (10–49%)	rapid decline (>30% over 3 gener­ations)	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
Savanna	54	Savanna
Forest	34	Tropical deciduous forest; Tropical semi-deciduous forest; Tropical semi-evergreen forest
Wetlands (inland)	9	Streams

Land use	% of IBA
agriculture	3

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Arroyos y Esteros (Paraguay). Downloaded from https://datazone.birdlife.org/site/factsheet/arroyos-y-esteros-iba-paraguay on 23/12/2024.