Data Zone
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 IBA criteria.
Populations meeting IBA criteria ('key species') at the site:| Species | Red List | Season (year/s of estimate) | 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 |
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.
| IBA conservation status | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2005 | not assessed | low | not assessed |
| Whole site assessed? | State assessed by | Accuracy of information | |
| no | unset | good | |
| Pressure (threats to the key species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Transportation and service corridors | happening now | few individuals/small area (<10%) | rapid deterioration (>30% over 3 generations) | low |
| Response (conservation actions taken for the key 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 |
|---|---|---|---|
| 2000 | Tejo Internacional | Parque Natural (V) | 77 |
| 2000 | Tejo Internacional | Natural Park (-) | 65 |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Shrubland | 55 | Sclerophyllous scrub, garrigue and maquis |
| Artificial/Terrestrial | 15 | Arable land; Perennial crops, orchards and groves; Forestry plantations |
| Wetlands (inland) | 15 | Water fringe vegetation; Rivers and streams |
| Forest | 10 | Broadleaved evergreen woodland |
| Rocky areas (eg. inland cliffs, mountain peaks) | 5 | Scree & boulders; Inland cliffs |
| Land use | % of IBA |
|---|---|
| fisheries/aquaculture | - |
| agriculture | - |
| forestry | - |
| hunting | - |
| tourism/recreation | - |
| nature conservation and research | - |
| water management | - |
Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Upper River Tejo (Portugal). Downloaded from
https://datazone.birdlife.org/site/factsheet/upper-river-tejo-iba-portugal on 22/01/2025.