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The site was identified as important 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 List1	Season	Year(s)	Size	IBA criteria
Common Little Bittern Ixobrychus minutus	LC	breeding	2007-2009	11-20 breeding pairs	C6
Mediterranean Gull Larus melanocephalus	LC	breeding	2007-2009	13 breeding pairs	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2010) may differ.

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.

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Mute Swan Cygnus olor	15	5	breeding pairs	34	very unfavourable
Red-crested Pochard Netta rufina	10	3	breeding pairs	30	very unfavourable

State (condition of the trigger species' habitats)
Habitat	Quantity (% remaining)	Quality (% carrying capacity)	Result
Wetlands (inland)	-	good (> 90%)	favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Biological resource use	happening now	whole area/population (>90%)	very rapid to severe deterioration	very high
Invasive and other problematic species and genes	happening now	whole area/population (>90%)	moderate to rapid deterioration	very high
Natural system modifications	likely in short term (within 4 years)	some of area/population (10-49%)	very rapid to severe deterioration	high
Energy production and mining	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Human intrusions and disturbance	happening now	majority/most of area/population (50-90%)	moderate to rapid deterioration	high
Transportation and service corridors	happening now	majority/most of area/population (50-90%)	no or imperceptible deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	No management planning has taken place	Very little or no conservation action taking place	low

Year	Protected Area	Designation	% overlap with IBA
2008	Las koło Tworkowa	Site of Community Importance (Habitats Directive)	9
2008	Stawy Wielikąt i Las Tworkowski	Special Protection Area (Birds Directive)	87

Habitat1	Habitat detail	% of IBA
Wetlands (inland)		40
Forest		12
Grassland		6

1. IUCN Habitat classification.

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Upper Odra River Valley (Poland). Downloaded from https://datazone.birdlife.org/site/factsheet/upper-odra-river-valley-iba-poland on 23/11/2024.