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

The site was identified as internationally important for bird conservation 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 List	Season (year/s of estimate)	Size	IBA criteria
White Stork Ciconia ciconia	LC	breeding (2005)	min 48 pairs	C6
Black-crowned Night Heron Nycticorax nycticorax	LC	breeding (2005)	min 8 pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	resident (2005)	min 7 pairs	C6
Black Kite Milvus migrans	LC	breeding (2005)	100–175 pairs	C6

Year	Protected Area	Designation (management category)	% coverage of IBA
2002	Riberas de Castronuño - Vega del Duero	Reserva Natural (III)	41

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	60	Arable land; Forestry plantations
Forest	50	Alluvial and very wet forest; Broadleaved evergreen woodland
Wetlands (inland)	15	Rivers and streams; Water fringe vegetation

Land use	% of IBA
hunting	60
agriculture	50
urban/industrial/transport	10
water management	10
forestry	5

---

Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Castronuño-Zamora (Spain). Downloaded from https://datazone.birdlife.org/site/factsheet/castronuño-zamora-iba-spain on 23/12/2024.