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The site was identified as internationally important for bird conservation in 2000 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
Rock Partridge Alectoris graeca	NT	breeding (1996)	40–60 pairs	B2
Eurasian Wryneck Jynx torquilla	LC	breeding (1996)	20–40 pairs	B2
Yellow-billed Chough Pyrrhocorax graculus	LC	resident (1996)	25 pairs	A3
Wallcreeper Tichodroma muraria	LC	resident (1996)	present	A3
Common Redstart Phoenicurus phoenicurus	LC	breeding (1996)	100 pairs	B2
Rufous-tailed Rock-thrush Monticola saxatilis	LC	breeding (1996)	10–25 pairs	B2
Alpine Accentor Prunella collaris	LC	resident (1996)	30–50 pairs	A3
White-winged Snowfinch Montifringilla nivalis	LC	resident (1996)	present	A3
Citril Finch Carduelis citrinella	LC	breeding (1996)	present	A3

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2000. The most recent assessment (2013) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Residential and commercial development	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Natural system modifications	happe­ning now	some of popul­ation/area (10–49%)	slow decline (1–10% over 3 gener­ations)	medium
Pollution	happe­ning now	whole of popul­ation/area (>90%)	no or slight decline (<1% over 3 gener­ations)	low
Human intrusions and disturbance	happe­ning now	some of popul­ation/area (10–49%)	no or slight decline (<1% over 3 gener­ations)	low
Invasive and other problematic species and genes	happe­ning now	some of popul­ation/area (10–49%)	no or slight decline (<1% over 3 gener­ations)	low
Climate change and severe weather	likely in long term (>4 years)	whole of popul­ation/area (>90%)	no or slight decline (<1% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Some of area covered (10–49%)	A management plan exists, but it is out of date or not compre­hensive	Very little or no conservation action taking place	low

Year	Protected Area	Designation (management category)	% coverage of IBA
1983	Val Verzasca	Landscapes and Natural Monuments of National Importance (V)	27
1991	Piano sopra Visletto	Bundesinventar der Hoch- und Übergangsmoore von nationaler Bedeutung (Ia)	-
1992	Maggia	Bundesinventar der Auengebiete von nationaler Bedeutung (IV)	3
1992	Saleggio	Bundesinventar der Auengebiete von nationaler Bedeutung (IV)	<1
2001	Lanca Saligin	Bundesinventar der Amphibienlaichgebiete von nationaler Bedeutung (IV)	<1
2001	Laghetto Pianca	Bundesinventar der Amphibienlaichgebiete von nationaler Bedeutung (IV)	<1
2001	Lago di Masnee	Bundesinventar der Amphibienlaichgebiete von nationaler Bedeutung (IV)	<1
2010	Torbeccio	Bundesinventar der Trockenwiesen und -weiden von nationaler Bedeutung (IV)	<1
2010	Brione	Bundesinventar der Trockenwiesen und -weiden von nationaler Bedeutung (IV)	<1
2010	Aurigeno	Bundesinventar der Trockenwiesen und -weiden von nationaler Bedeutung (IV)	<1
2017	Da l'Ovi	Federal Inventory of Dry Grasslands and Pastures of National Importance (IV)	<1

Habitat	% of IBA	Habitat detail
Forest	56	Broadleaved deciduous woodland; Native coniferous woodland; Alluvial and very wet forest; Treeline ecotone
Rocky areas (eg. inland cliffs, mountain peaks)	26	Inland cliffs; Scree & boulders
Grassland	7	Alpine, subalpine and boreal grassland
Artificial/Terrestrial	2	Urban parks and gardens; Other urban and industrial areas
Wetlands (inland)	-	Rivers and streams; Raised bogs

Land use	% of IBA
agriculture	8
urban/industrial/transport	2
forestry	-
tourism/recreation	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Maggia valley (Switzerland). Downloaded from https://datazone.birdlife.org/site/factsheet/maggia-valley-iba-switzerland on 23/12/2024.