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• Text account
• Data table and detailed info
• Map
• Reference and further resources

The site was identified as important in 2011 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
Purple Swamphen Porphyrio porphyrio	LC	resident	2009	10-20 breeding pairs	C6
Common Little Bittern Ixobrychus minutus	LC	breeding	2008	20-40 breeding pairs	C6
Black-crowned Night Heron Nycticorax nycticorax	LC	resident	2009	100-200 breeding pairs	C2, C6
Purple Heron Ardea purpurea	LC	breeding	2009	25-50 breeding pairs	B1i, C2, C6
Western Marsh-harrier Circus aeruginosus	LC	winter	2007	16-19 individuals	C6
Western Marsh-harrier Circus aeruginosus	LC	resident	2007	15-25 breeding pairs	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2011) may differ.

Year	Protected Area	Designation	% overlap with IBA
1997	Río Tajo en Castrejón; islas de Malpica de Tajo y Azután	Site of Community Importance (Habitats Directive)	28
1998	Río Tajo en Castrejón; islas de Malpica de Tajo y Azután	Special Protection Area (Birds Directive)	25
2010	Barrancas de Castrejon y Calaña	Monumento Natural	5

Habitat1	Habitat detail	% of IBA
Forest	Alluvial and very wet forest, Broadleaved evergreen woodland	26
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation	26
Artificial/Terrestrial	Arable land, Perennial crops, orchards and groves	-
Grassland		-

1. IUCN Habitat classification.

Land use	% of IBA
water management	26
agriculture	-
tourism/recreation	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Castrejón reservoir (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/castrejón-reservoir-iba-spain on 23/11/2024.