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The site was identified as internationally important for bird conservation in 2003 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
Barnacle Goose Branta leucopsis	LC	passage (1999–2000)	4,130 birds	A4i, B1i, C2
Greylag Goose Anser anser	LC	non-breeding (1994)	450 birds	B1i, C3
Gadwall Mareca strepera	LC	passage (1999)	1,170 birds	B1i, C3

Year	Protected Area	Designation (management category)	% coverage of IBA
1990	West Estonian Archipelago	UNESCO-MAB Biosphere Reserve (UA)	100
2007	Sutu lahe hoiuala	Hoiuala (VI)	96
2007	Sutu lahe hoiuala	Limited Management Zone (-)	96
2007	Kasti lahe hoiuala	Limited Management Zone (-)	1

Habitat	% of IBA	Habitat detail
Marine Neritic	77
Grassland	9
Shrubland	7
Wetlands (inland)	5	Water fringe vegetation
Artificial/Terrestrial	2	Arable land

Land use	% of IBA
nature conservation and research	97
fisheries/aquaculture	75
agriculture	10
forestry	3
hunting	-
tourism/recreation	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Sutu bay (Estonia). Downloaded from https://datazone.birdlife.org/site/factsheet/sutu-bay-iba-estonia on 26/12/2024.