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The site was identified as important in 2000 because it was regularly supporting significant populations of the species listed below, meeting ('triggering') IBA criteria.

Populations meeting IBA criteria ('trigger species'):

Species	Current IUCN Red List Category	Season	Year(s)	Population estimate at site	IBA criteria met
Corncrake Crex crex	LC	breeding	1996	120-140 breeding pairs	A1, B2
Spotted Crake Porzana porzana	LC	breeding	1996	70-80 breeding pairs	B3
Eurasian Bittern Botaurus stellaris	LC	breeding	1997	40-50 breeding pairs	B2
Common Little Bittern Ixobrychus minutus	LC	breeding	1999	150-170 breeding pairs	B2
Great White Egret Ardea alba	LC	breeding	1997	42-54 breeding pairs	A4i, B1i
Great Snipe Gallinago media	NT	breeding	1996	15-25 breeding pairs	A1
Black Tern Chlidonias niger	LC	breeding	1997	60-90 breeding pairs	B2
Common Kingfisher Alcedo atthis	LC	breeding	1996	10-15 breeding pairs	B2
Sedge Warbler Acrocephalus schoenobaenus	LC	breeding	1999	2,500-3,000 breeding pairs	B3
Marsh Warbler Acrocephalus palustris	LC	breeding	1999	3,000-3,200 breeding pairs	B3
Common Reed-warbler Acrocephalus scirpaceus	LC	breeding	1999	3,500-4,000 breeding pairs	B3
Savi's Warbler Locustella luscinioides	LC	breeding	1999	1,500-1,700 breeding pairs	B3
River Warbler Locustella fluviatilis	LC	breeding	1999	250-300 breeding pairs	B3
Garden Warbler Sylvia borin	LC	breeding	1999	900-1,100 breeding pairs	B3
Barred Warbler Curruca nisoria	LC	breeding	1999	800-900 breeding pairs	B3
A4iii Species group - waterbirds	n/a	unknown	-	min 20,000 individuals	A4iii

The current IUCN Red List category may differ from that which was valid at the time of IBA criteria assessment (2000).

Protected area (PA)	PA designation	PA area (ha)	Relationship of PA with IBA	Overlap of PA with IBA (ha)
Kukilivs'kiy	Regional Zakaznik	5	protected area overlaps with site	0

Habitat (IUCN level 1)	Habitat detail	Extent (% of site)
Forest	Alluvial and very wet forest	-
Grassland	Humid grasslands	-
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation, Fens, transition mires and springs	-
Artificial/Terrestrial	Arable land, Forestry plantations, Other urban and industrial areas	-

For more information about the IUCN Habitat classification, please click here.

Land-use	Extent (% of site)
agriculture	-
forestry	-

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Recommended citation
BirdLife International (2023) Important Bird Area factsheet: Mzha river valley. Downloaded from http://datazone.birdlife.org/site/factsheet/mzha-river-valley-iba-ukraine on 03/12/2023.