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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Greater Rhea Rhea americana	NT	resident	2001-2003	50-249 individuals	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 individuals	A1
Black-and-white Monjita Xolmis dominicanus	VU	resident	2001-2003	50-249 individuals	A1
Saffron-cowled Blackbird Xanthopsar flavus	EN	resident	2001-2003	250-999 individuals	A1, A4ii
Yellow Cardinal Gubernatrix cristata	EN	resident	2001-2003	< 50 individuals	A1
Dark-throated Seedeater Sporophila ruficollis	NT	resident	2001-2003	50-249 individuals	A1
Rufous-rumped Seedeater Sporophila hypochroma	NT	resident	2001-2003	50-249 individuals	A1
Chestnut Seedeater Sporophila cinnamomea	VU	resident	2001-2003	50-249 individuals	A1, A2, A3
Marsh Seedeater Sporophila palustris	EN	resident	2001-2003	50-249 individuals	A1, A2, A3
Marsh Seedeater Sporophila palustris	EN	resident	2001-2003	< 50 individuals	A1, A2, A3

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2008) may differ.

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 area/population (>90%)	very rapid to severe deterioration	very high
Biological resource use	happening now	some of area/population (10-49%)	moderate to rapid deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Little/none of site covered (<10%)	No management planning has taken place	Some limited conservation initiatives are in place	negligible

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 click here.

Habitat1	Habitat detail	% of IBA
Grassland		major (>10)
Savanna		major (>10)
Shrubland		major (>10)
Wetlands (inland)		major (>10)

1. IUCN Habitat classification.

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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 23/11/2024.