Data Zone
The site was identified as internationally important for bird conservation in 2010 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 |
|---|---|---|---|---|
| Black Grouse Lyrurus tetrix | LC | breeding (2000–2007) | 7–22 males | C6 |
| Whooper Swan Cygnus cygnus | LC | breeding (2000–2007) | 2–3 pairs | C6 |
| Greater White-fronted Goose Anser albifrons | LC | passage (2004–2009) | 15,000 birds | C3 |
| Corncrake Crex crex | LC | breeding (2000–2007) | 300–887 males | C1, C6 |
| Little Crake Zapornia parva | LC | breeding (2000–2007) | 42 males | C6 |
| Great Snipe Gallinago media | NT | breeding (2000–2007) | 65–94 males | C1, C2, C6 |
| Western Marsh-harrier Circus aeruginosus | LC | breeding (2000–2007) | 66–91 pairs | C6 |
| Montagu's Harrier Circus pygargus | LC | breeding (2000–2007) | 36–45 pairs | C6 |
| Aquatic Warbler Acrocephalus paludicola | VU | breeding (2000–2007) | 10–26 males | C1 |
| A4iii Species group - waterbirds | n/a | passage (2007–2009) | 25,000 birds | C4 |
Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2010. The most recent assessment (2010) is shown below.
| IBA conservation assessment | |||
|---|---|---|---|
| Year of assessment | State | Pressure | Response |
| 2010 | not assessed | very high | very low |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | unset | medium | |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Natural system modifications | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Human intrusions and disturbance | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Invasive and other problematic species and genes | happening now | whole of population/area (>90%) | moderate decline (10–30% over 3 generations) | very high |
| Agricultural expansion and intensification | happening now | most of population/area (50–90%) | rapid decline (>30% over 3 generations) | very high |
| Pollution | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Transportation and service corridors | happening now | most of population/area (50–90%) | slow decline (1–10% over 3 generations) | high |
| Biological resource use | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Residential and commercial development | happening now | some of population/area (10–49%) | moderate decline (10–30% over 3 generations) | high |
| Energy production and mining | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Climate change and severe weather | happening now | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| No known threats | 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 |
| Little/none of area covered (<10%) | No management planning has taken place | Some limited conservation initiatives are in place | very low |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Grassland | 63 | Humid grasslands; Mesophile grasslands |
| Artificial/Terrestrial | 18 | Arable land; Ruderal land |
| Forest | 16 | Broadleaved deciduous woodland; Mixed woodland; Alluvial and very wet forest |
| Wetlands (inland) | 2 | Standing freshwater; Rivers and streams; Water fringe vegetation |
| Other | 1 |
| Land use | % of IBA |
|---|---|
| agriculture | 70 |
| unknown | 15 |
| fisheries/aquaculture | 10 |
| forestry | 5 |
| hunting | - |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Upper Narew River Valley (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/upper-narew-river-valley-iba-poland on 23/12/2024.