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-tailed Godwit Limosa limosa | NT | breeding (2006–2007) | 20 pairs | C1 |
| Montagu's Harrier Circus pygargus | LC | breeding (2006–2007) | 25 pairs | C6 |
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 | good | very high | medium |
| Whole site assessed? | State assessed by | Accuracy of information | |
| yes | population | medium | |
| State (condition of the trigger species' populations) | |||||
|---|---|---|---|---|---|
| Species | Actual vs Reference (units) | % remaining | Result | ||
| White-tailed Sea-eagle Haliaeetus albicilla | 3 / 3 (pairs) | 100 | good | ||
| State (condition of the trigger species' habitats) | |||
|---|---|---|---|
| Habitat | Quantity (% remaining) | Quality (% carrying capacity) | Result |
| Grassland | poor (40–69%) | poor (40–69%) | very poor |
| Pressure (threats to the trigger species and/or their habitats) | ||||
|---|---|---|---|---|
| Threat | Timing | Scope | Severity | Result |
| Agricultural expansion and intensification | happening now | whole of population/area (>90%) | rapid decline (>30% over 3 generations) | very high |
| Natural system modifications | happening now | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Biological resource use | likely in short term (<4 years) | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Climate change and severe weather | likely in short term (<4 years) | most of population/area (50–90%) | moderate decline (10–30% over 3 generations) | high |
| Residential and commercial development | likely in long term (>4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Energy production and mining | likely in long term (>4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Transportation and service corridors | likely in long term (>4 years) | some of population/area (10–49%) | slow decline (1–10% over 3 generations) | medium |
| Pollution | likely in long term (>4 years) | 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 |
| Whole area (>90%) covered by appropriate conservation designation | A comprehensive and appropriate management plan exists that aims to maintain or improve the populations of qualifying bird species | Some limited conservation initiatives are in place | medium |
| Habitat | % of IBA | Habitat detail |
|---|---|---|
| Grassland | 82 | |
| Wetlands (inland) | 11 | |
| Forest | 5 | |
| Artificial/Terrestrial | 2 |
Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Bzura River Valley (Poland). Downloaded from
https://datazone.birdlife.org/site/factsheet/bzura-river-valley-iba-poland on 27/12/2024.