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The site was identified as internationally important for bird conservation in 2008 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
Greater Rhea Rhea americana	NT	resident (2001–2003)	50-249 birds	A1
Curve-billed Reedhaunter Limnornis curvirostris	LC	resident (2001–2003)	present	A3
Sulphur-throated Spinetail Limnoctites sulphuriferus	LC	resident (2001–2003)	present	A3
Bearded Tachuri Polystictus pectoralis	NT	resident (2001–2003)	50-249 birds	A1
Black-and-white Monjita Xolmis dominicanus	VU	resident (2001–2003)	50-249 birds	A1
Saffron-cowled Blackbird Xanthopsar flavus	EN	resident (2001–2003)	250-999 birds	A1, A4ii
Yellow Cardinal Gubernatrix cristata	EN	resident (2001–2003)	< 50 birds	A1
Dark-throated Seedeater Sporophila ruficollis	NT	resident (2001–2003)	50-249 birds	A1
Rufous-rumped Seedeater Sporophila hypochroma	NT	resident (2001–2003)	50-249 birds	A1
Chestnut Seedeater Sporophila cinnamomea	VU	resident (2001–2003)	50-249 birds	A1, A2, A3
Marsh Seedeater Sporophila palustris	EN	resident (2001–2003)	50-249 birds	A1, A2, A3
Marsh Seedeater Sporophila palustris	EN	resident (2001–2003)	< 50 birds	A1, A2, A3

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2008. The most recent assessment (2019) 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
Biological resource use	happe­ning now	some of popul­ation/area (10–49%)	moderate decline (10–30% 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	Some limited conservation initiatives are in place	very low

The Local Conservation Group(s) listed below are working to conserve this IBA.

Name	Year formed
Guardafaunas Gualeguaychú, Asociación	2004

For more information on BirdLife's work with Local Conservation Groups, please visit Spotlight on local empowerment.

Habitat	% of IBA	Habitat detail
Grassland	major (>10)
Savanna	major (>10)
Shrubland	major (>10)
Wetlands (inland)	major (>10)

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Perdices (Argentina). Downloaded from https://datazone.birdlife.org/site/factsheet/perdices-iba-argentina on 23/12/2024.