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The site was identified as internationally important for bird conservation in 2005 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
Eurasian Bittern Botaurus stellaris	LC	resident (1999)	4–5 pairs	C6
Great White Egret Ardea alba	LC	winter (1999)	50–150 birds	A4i, B1i, C2
Pygmy Cormorant Microcarbo pygmaeus	LC	winter (1999)	8–630 birds	A1, A4i, B1i, C1, C2
Montagu's Harrier Circus pygargus	LC	resident (1999)	1–5 pairs	C6
European Bee-eater Merops apiaster	LC	breeding (1999)	180–200 pairs	B2
Common Kingfisher Alcedo atthis	LC	resident (1999)	10–12 pairs	B2
Tawny Pipit Anthus campestris	LC	breeding (1999)	20–40 pairs	C6

Ideally the conservation status of the IBA will have been checked regularly since the site was first identified in 2005. The most recent assessment (2007) is shown below.

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Agricultural expansion and intensification	happe­ning now	few indivi­duals/small area (<10%)	moderate decline (10–30% over 3 gener­ations)	low

Response (conservation actions taken for the trigger species and/or their habitats)
Designation	Planning	Action	Result
Not assessed	Not assessed	Not assessed	not assessed

Land use	% of IBA
hunting	90
agriculture	86
urban/industrial/transport	5
water management	3

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Adata-Tundzha (Bulgaria). Downloaded from https://datazone.birdlife.org/site/factsheet/adata-tundzha-iba-bulgaria on 24/12/2024.