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The site was identified as important in 2002 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
Greylag Goose Anser anser	LC	winter	1997-2000	800-10,500 individuals	C3
Bean Goose Anser fabalis	LC	winter	1997-2000	10,000-30,000 individuals	C3
Greater White-fronted Goose Anser albifrons	LC	winter	1997-2000	3,000-8,000 individuals	C3
Common Goldeneye Bucephala clangula	LC	winter	1997-2000	1,250 individuals	C3
Ferruginous Duck Aythya nyroca	NT	breeding	1997-2000	40-50 breeding pairs	C1, C6
Eurasian Coot Fulica atra	LC	winter	1997-2000	30,000 individuals	C3
Eurasian Bittern Botaurus stellaris	LC	breeding	1997-2000	20 breeding pairs	C2
Common Little Bittern Ixobrychus minutus	LC	breeding	1997-2000	75 breeding pairs	C2, C6
Squacco Heron Ardeola ralloides	LC	breeding	1997-2000	20-25 breeding pairs	C2, C6
Purple Heron Ardea purpurea	LC	breeding	1997-2000	40-50 breeding pairs	C6
Great White Egret Ardea alba	LC	breeding	1997-2000	250 breeding pairs	C2, C6
Pygmy Cormorant Microcarbo pygmaeus	LC	breeding	1997-2000	10 breeding pairs	C1, C6
Whiskered Tern Chlidonias hybrida	LC	breeding	1997-2000	300 breeding pairs	C6
Black Tern Chlidonias niger	LC	breeding	1997-2000	100-200 breeding pairs	C6
Common Tern Sterna hirundo	LC	breeding	1997-2000	250-300 breeding pairs	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	1997-2000	40 breeding pairs	C6
Moustached Warbler Acrocephalus melanopogon	LC	breeding	1997-2000	30 breeding pairs	C6

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2002) may differ.

Year	Protected Area	Designation	% overlap with IBA
1979	Kis-Balaton	Ramsar Site, Wetland of International Importance	100
1997	Balaton-felvidéki	Nemzeti Park	100
2003	Kis-Balaton	Site of Community Importance (Habitats Directive)	87
2004	Kis-Balaton	Special Protection Area (Birds Directive)	82
2004	Alsó-Zala-völgy	Site of Community Importance (Habitats Directive)	3

Habitat1	Habitat detail	% of IBA
Wetlands (inland)		50
Artificial/Terrestrial		45

1. IUCN Habitat classification.

Land use	% of IBA
water management	60
nature conservation and research	50
other	40
agriculture	20
forestry	10
fisheries/aquaculture	7
not utilised	5

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Lake Kis-Balaton (Hungary). Downloaded from https://datazone.birdlife.org/site/factsheet/lake-kis-balaton-iba-hungary on 25/11/2024.