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The site was identified as internationally important for bird conservation in 2002 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 Flamingo Phoenicopterus roseus	LC	winter (2000)	350–1,180 birds	A4i, B1i, C2
Little Bustard Tetrax tetrax	NT	breeding (2002)	10–20 birds	C6
Little Bustard Tetrax tetrax	NT	winter (2002)	90–100 birds	C6
White Stork Ciconia ciconia	LC	resident (1996)	100–150 birds	B2, C6
Eurasian Spoonbill Platalea leucorodia	LC	winter (1996)	200–500 birds	A4i, B1i, C2
Eurasian Thick-knee Burhinus oedicnemus	LC	breeding (2002)	common	C6
Eurasian Thick-knee Burhinus oedicnemus	LC	winter (2002)	200–300 birds	C6
Pied Avocet Recurvirostra avosetta	LC	winter (1996)	400–560 birds	B2, C6
Pied Avocet Recurvirostra avosetta	LC	breeding (2001)	121–198 pairs	B2, C6
Black-winged Stilt Himantopus himantopus	LC	resident (2001)	200 pairs	A4i, B1i, C2, C6
Collared Pratincole Glareola pratincola	LC	breeding (2000)	rare	C6
Little Tern Sternula albifrons	LC	breeding (2001)	50–90 pairs	B2, C6
Calandra Lark Melanocorypha calandra	LC	breeding (1996)	rare	C6
Thekla's Lark Galerida theklae	LC	resident (2001)	frequent	C6

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2002. The most recent assessment (2005) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Transportation and service corridors	happe­ning now	few indivi­duals/small area (<10%)	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
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation (management category)	% coverage of IBA
1975	Sapal de Castro Marim e Vila Real de Santo António	Reserva Natural (IV)	87

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	-	Arable land; Perennial crops, orchards and groves; Forestry plantations
Marine Coastal/Supratidal	-
Marine Intertidal	-
Marine Neritic	-

Land use	% of IBA
water management	-
fisheries/aquaculture	-
nature conservation and research	-
tourism/recreation	-
agriculture	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Castro Marim (Portugal). Downloaded from https://datazone.birdlife.org/site/factsheet/castro-marim-iba-portugal on 23/12/2024.