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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Pin-tailed Sandgrouse Pterocles alchata	LC	resident	2002	3-6 breeding pairs	C6
Red-necked Nightjar Caprimulgus ruficollis	NT	breeding	2002	10-100 breeding pairs	A3
Black Stork Ciconia nigra	LC	breeding	2002	18-19 breeding pairs	A4i, B1i, B2, C6
Eurasian Eagle-owl Bubo bubo	LC	resident	2001	6-10 breeding pairs	C6
Black-winged Kite Elanus caeruleus	LC	resident	2002	1-5 breeding pairs	C6
Egyptian Vulture Neophron percnopterus	EN	breeding	2002	20-22 breeding pairs	B2, C6
Short-toed Snake-eagle Circaetus gallicus	LC	breeding	2001	5-10 breeding pairs	C6
Griffon Vulture Gyps fulvus	LC	resident	1999	110-112 breeding pairs	B2, C6
Cinereous Vulture Aegypius monachus	NT	resident	2002	1 breeding pairs	C6
Golden Eagle Aquila chrysaetos	LC	resident	2002	6-7 breeding pairs	C6
Bonelli's Eagle Aquila fasciata	LC	resident	2002	5-7 breeding pairs	B2, C6
Booted Eagle Hieraaetus pennatus	LC	breeding	2001	11-20 breeding pairs	B2, C6
Red Kite Milvus milvus	LC	breeding	2001	1 breeding pairs	C6
Black Kite Milvus migrans	LC	breeding	2001	6-10 breeding pairs	C6
Calandra Lark Melanocorypha calandra	LC	resident	2002	common	C6
Greater Short-toed Lark Calandrella brachydactyla	LC	resident	2002	frequent	C6
Spectacled Warbler Curruca conspicillata	LC	breeding	2002	rare	A3
Blue Rock-thrush Monticola solitarius	LC	resident	2002	80-200 breeding pairs	B2
Black Wheatear Oenanthe leucura	LC	resident	2001	uncommon	A3, B2, C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2002) may differ.

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	small area/few individuals (<10%)	very rapid to severe deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Not assessed	Not assessed	Not assessed	not assessed

Year	Protected Area	Designation	% overlap with IBA
1999	Tejo Internacional; Erges e Pônsul	Special Protection Area (Birds Directive)	94
2000	Tejo Internacional	Parque Natural	77
2000	Tejo Internacional	Natural Park	65

Habitat1	Habitat detail	% of IBA
Shrubland	Sclerophyllous scrub, garrigue and maquis	55
Artificial/Terrestrial	Arable land, Perennial crops, orchards and groves, Forestry plantations	15
Wetlands (inland)	Water fringe vegetation, Rivers and streams	15
Forest	Broadleaved evergreen woodland	10
Rocky areas (eg. inland cliffs, mountain peaks)	Scree & boulders, Inland cliffs	5

1. IUCN Habitat classification.

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

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Upper River Tejo (Portugal). Downloaded from https://datazone.birdlife.org/site/factsheet/upper-river-tejo-iba-portugal on 22/11/2024.