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The site was identified as internationally important for bird conservation in 2000 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
Ruddy Shelduck Tadorna ferruginea	LC	breeding (1996)	6–8 breeding pairs	B2
Ruddy Shelduck Tadorna ferruginea	LC	non-breeding (1994)	160 individuals	B1i
Great Cormorant Phalacrocorax carbo	LC	passage (1999)	2,000–5,000 individuals	A4i, B1i
Great Cormorant Phalacrocorax carbo	LC	breeding (1999)	1,650–2,200 breeding pairs	A4i, B1i
Pied Avocet Recurvirostra avosetta	LC	breeding (1994)	100–130 breeding pairs	B3
Collared Pratincole Glareola pratincola	LC	breeding (1994)	60–70 breeding pairs	A4i, B1i, B2
Slender-billed Gull Larus genei	LC	breeding (1994)	3,200 breeding pairs	A4i, B1i
Mediterranean Gull Larus melanocephalus	LC	breeding (1994)	2,700 breeding pairs	A4i, B1i, B3
Caspian Gull Larus cachinnans	LC	breeding (1994)	2,200 breeding pairs	A4i, B1i
Common Gull-billed Tern Gelochelidon nilotica	LC	breeding (1994)	360 breeding pairs	A4i, B1i, B2
Common Gull-billed Tern Gelochelidon nilotica	LC	passage (1994)	500–600 individuals	A4i, B1i
A4iii Species group - waterbirds	n/a	breeding (-)	min 20,000 individuals	A4iii

Year	Protected Area	Designation (management category)	% coverage of IBA
1974	Astanins'ki zaplavi	State Zakaznik (IV)	-

Habitat	% of IBA	Habitat detail
Marine Coastal/Supratidal	74
Grassland	17	Steppes and dry calcareous grassland
Marine Neritic	6
Artificial/Terrestrial	3	Arable land

Land use	% of IBA
fisheries/aquaculture	-
agriculture	-

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Kazantip Cape, Aktash lake and Astanins'ka marsh (Ukraine). Downloaded from https://datazone.birdlife.org/site/factsheet/kazantip-cape-aktash-lake-and-astaninska-marsh-iba-ukraine on 13/01/2025.