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The site was identified as important in 2009 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
Red Kite Milvus milvus	LC	breeding	1997-2009	3-5 breeding pairs	C6
Black Kite Milvus migrans	LC	breeding	1997-2009	6-9 breeding pairs	C6
Common Kingfisher Alcedo atthis	LC	resident	2000-2009	6-12 breeding pairs	B2, C6
Red-backed Shrike Lanius collurio	LC	breeding	2000-2009	30-60 breeding pairs	C6
Great Grey Shrike Lanius excubitor	LC	resident	2006-2007	10-14 breeding pairs	B2

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2009) may differ.

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2009. The most recent assessment (2009) is shown below.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Little Owl Athene noctua	4	7	breeding pairs	100	favourable
Milvus migrans	3	9	breeding pairs	100	favourable
Lanius excubitor	14	7	breeding pairs	50	unfavourable
Meadow Pipit Anthus pratensis	15	2	-	14	not assessed

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Some of site covered (10-49%)	No management plan exists but the management planning process has begun	Some limited conservation initiatives are in place	low

Year	Protected Area	Designation	% overlap with IBA
1981	Colpach-Bas/Wisich	Humid Zone	<1
1981	Calhus-Hassel	Humid Zone	1
1982	Bissen-Laaschtert	Divers Nature Reserve	2
1987	Fensterdall (Boevange-sur-Attert)	Zones protégées d'intérêt national - Réserve naturelle	<1
1989	Ell-Groswis	Humid Zone	1
1989	Bissen/Forges-Laach	Humid Zone	<1
1996	Vallée de l'Attert de la frontière à Useldange	Site of Community Importance (Habitats Directive)	5
1996	Zones humides de Bissen et Fensterdall	Site of Community Importance (Habitats Directive)	1
2002	Massif forestier du Stiefeschboesch	Site of Community Importance (Habitats Directive)	1
2004	Vallée de l'Attert de la frontière à Useldange	Zones protégées d'intérêt communautaire - Zones Habitats ZSC	6
2004	Zones humides de Bissen et Fensterdall	Zones protégées d'intérêt communautaire - Zones Habitats ZSC	1
2004	Massif forestier du Stiefeschboesch	Zones protégées d'intérêt communautaire - Zones Habitats ZSC	1
2015	Vallées de l’Attert, Pall, Schwébech, l'Aeschbech, Wëllerbachde la Schwébech, de l'Aeschbech et de la Wëllerbach	Zones protégées d'intérêt communautaire - Zones Oiseaux ZPS	82
2015	Vallées de l'Attert; de la Pall, de la Schwébech, de l'Aeschbech et de la Wëllerbaach	Special Protection Area (Birds Directive)	82

Habitat1	Habitat detail	% of IBA
Grassland	Humid grasslands, Mesophile grasslands	61
Artificial/Terrestrial	Arable land, Forestry plantations, Other urban and industrial areas, Perennial crops, orchards and groves, Ruderal land	22
Forest	Alluvial and very wet forest, Broadleaved deciduous woodland, Mixed woodland	15
Shrubland	Scrub	1
Wetlands (inland)	Rivers and streams, Standing freshwater	1

1. IUCN Habitat classification.

Land use	% of IBA
rangeland/pastureland	61
agriculture	17
forestry	15
nature conservation and research	minor (<10)
hunting	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Valley of the Attert (Luxembourg). Downloaded from https://datazone.birdlife.org/site/factsheet/valley-of-the-attert-iba-luxembourg on 22/11/2024.