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The site was identified as internationally important for bird conservation in 2007 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
Mute Swan Cygnus olor	LC	passage (1990–2006)	800–1,200 individuals	C3
Whooper Swan Cygnus cygnus	LC	winter (1990–2006)	220–300 individuals	C2, C6
Common Goldeneye Bucephala clangula	LC	winter (1990–2006)	250–350 individuals	C3
Smew Mergellus albellus	LC	winter (1990–2006)	20–150 individuals	C2, C6
Smew Mergellus albellus	LC	passage (1990–2006)	100–200 individuals	C2
Goosander Mergus merganser	LC	winter (1990–2006)	210–380 individuals	C3
Ferruginous Duck Aythya nyroca	NT	passage (1990–2006)	100–200 individuals	C1
Common Crane Grus grus	LC	passage (1990–2006)	25–80 individuals	C6
Pygmy Cormorant Microcarbo pygmaeus	LC	passage (1990–2006)	150–300 individuals	C2
Great Cormorant Phalacrocorax carbo	LC	winter (1990–2006)	3,000–5,000 individuals	C3
Ruff Calidris pugnax	LC	passage (1990–2006)	5,000–8,000 individuals	C6
Spotted Redshank Tringa erythropus	LC	passage (1990–2006)	1,000–2,000 individuals	C3
Wood Sandpiper Tringa glareola	LC	passage (1990–2006)	1,000–1,500 individuals	C6
Black-headed Gull Larus ridibundus	LC	passage (1990–2006)	15,000–25,000 individuals	C3
Common Tern Sterna hirundo	LC	breeding (1990–2006)	80–100 breeding pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding (1990–2006)	7–10 breeding pairs	C6
A4iii Species group - waterbirds	n/a	winter (1990–2006)	25,000–50,000 individuals	C4
A4iii Species group - waterbirds	n/a	passage (1990–2006)	80,000–110,000 individuals	C4

Year	Protected Area	Designation (management category)	% coverage of IBA
2016	Siretul Mijlociu	Site of Community Importance (Habitats Directive) (UA)	16

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Buhuşu reservoir - Bacău - Tătărăşti (Romania). Downloaded from https://datazone.birdlife.org/site/factsheet/buhuşu-reservoir--bacău--tătărăşti-iba-romania on 14/01/2025.