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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
Greater Rhea Rhea americana	NT	resident (1998–2007)	present	A1
Solitary Tinamou Tinamus solitarius	NT	resident (1998–2007)	present	A1, A3
Black-fronted Piping-guan Pipile jacutinga	EN	resident (1998–2007)	present	A1, A3
Spot-winged Wood-quail Odontophorus capueira	LC	resident (1998–2007)	present	A3
Scale-throated Hermit Phaethornis eurynome	LC	resident (1998–2007)	present	A3
Violet-capped Woodnymph Thalurania glaucopis	LC	resident (1998–2007)	present	A3
Slaty-breasted Wood-rail Aramides saracura	LC	resident (1998–2007)	present	A3
Black-capped Screech-owl Megascops atricapilla	LC	resident (1998–2007)	present	A3
Southern Surucua Trogon Trogon surrucura	LC	resident (1998–2007)	present	A3
Rufous-capped Motmot Baryphthengus ruficapillus	LC	resident (1998–2007)	present	A3
Buff-bellied Puffbird Notharchus swainsoni	LC	resident (1998–2007)	present	A3
Red-breasted Toucan Ramphastos dicolorus	LC	resident (1998–2007)	present	A3
Spot-billed Toucanet Selenidera maculirostris	LC	resident (1998–2007)	present	A3
Saffron Toucanet Pteroglossus bailloni	NT	resident (1998–2007)	present	A1, A3
Ochre-collared Piculet Picumnus temminckii	LC	resident (1998–2007)	present	A3
Robust Woodpecker Campephilus robustus	LC	resident (1998–2007)	present	A3
Helmeted Woodpecker Celeus galeatus	VU	resident (1998–2007)	present	A1, A3
Yellow-fronted Woodpecker Melanerpes flavifrons	LC	resident (1998–2007)	present	A3
White-spotted Woodpecker Veniliornis spilogaster	LC	resident (1998–2007)	present	A3
Pileated Parrot Pionopsitta pileata	LC	resident (1998–2007)	present	A3
Streak-capped Antwren Terenura maculata	LC	resident (1998–2007)	present	A3
Tufted Antshrike Mackenziaena severa	LC	resident (1998–2007)	present	A3
White-shouldered Fire-eye Pyriglena leucoptera	LC	resident (1998–2007)	present	A3
Rufous Gnateater Conopophaga lineata	LC	resident (1998–2007)	present	A3
Speckle-breasted Antpitta Cryptopezus nattereri	LC	resident (1998–2007)	present	A3
Rufous-breasted Leaftosser Sclerurus scansor	LC	resident (1998–2007)	present	A3
Ochre-breasted Foliage-gleaner Anabacerthia lichtensteini	LC	resident (1998–2007)	present	A3
White-eyed Foliage-gleaner Automolus leucophthalmus	LC	resident (1998–2007)	present	A3
Rufous-capped Spinetail Synallaxis ruficapilla	LC	resident (1998–2007)	present	A3
Blue Manakin Chiroxiphia caudata	LC	resident (1998–2007)	present	A3
Bare-throated Bellbird Procnias nudicollis	NT	resident (1998–2007)	present	A1, A3
Greenish Schiffornis Schiffornis virescens	LC	resident (1998–2007)	present	A3
Russet-winged Spadebill Platyrinchus leucoryphus	VU	resident (1998–2007)	present	A1, A3
Bay-ringed Tyrannulet Phylloscartes sylviolus	LC	resident (1998–2007)	present	A1, A3
Southern Bristle-tyrant Pogonotriccus eximius	NT	resident (1998–2007)	present	A1, A3
Grey-hooded Flycatcher Mionectes rufiventris	LC	resident (1998–2007)	present	A3
Eared Pygmy-tyrant Myiornis auricularis	LC	resident (1998–2007)	present	A3
Greenish Tyrannulet Phyllomyias virescens	LC	resident (1998–2007)	present	A3
Shear-tailed Grey Tyrant Muscipipra vetula	LC	resident (1998–2007)	present	A3
Rufous-crowned Greenlet Hylophilus poicilotis	LC	resident (1998–2007)	present	A3
Creamy-bellied Gnatcatcher Polioptila lactea	LC	resident (1998–2007)	present	A1, A3
Chestnut-bellied Euphonia Euphonia pectoralis	LC	resident (1998–2007)	present	A3
Ruby-crowned Tanager Tachyphonus coronatus	LC	resident (1998–2007)	present	A3
Chestnut-headed Tanager Thlypopsis pyrrhocoma	LC	resident (1998–2007)	present	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 (2017) 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
Human intrusions and disturbance	happe­ning now	whole of popul­ation/area (>90%)	moderate decline (10–30% over 3 gener­ations)	very high
Biological resource use	happe­ning now	most of popul­ation/area (50–90%)	moderate decline (10–30% over 3 gener­ations)	high
Natural system modifications	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium

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
Forest	86	Tropical deciduous forest; Tropical semi-deciduous forest; Tropical semi-evergreen forest
Savanna	6	Savanna
Shrubland	1	Scrub

Land use	% of IBA
agriculture	7

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Paso Curuzú (Paraguay). Downloaded from https://datazone.birdlife.org/site/factsheet/paso-curuzú-iba-paraguay on 23/12/2024.