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The site was identified as internationally important for bird conservation in 2002 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
Little Tern Sternula albifrons	LC	breeding (1996–2000)	20–50 breeding pairs	C6

Year	Protected Area	Designation (management category)	% coverage of IBA
1996	Riserva naturale della Foce dell' Isonzo	Riserva naturale regionale/provinciale (IV)	35
1996	Foci Isonzo	Regional Nature Reserve (-)	34

Habitat	% of IBA	Habitat detail
Artificial/Terrestrial	29	Arable land
Forest	5	Broadleaved deciduous woodland
Marine Intertidal	major (>10)
Marine Neritic	major (>10)
Wetlands (inland)	minor (<10)	Rivers and streams; Water fringe vegetation

Land use	% of IBA
nature conservation and research	50
hunting	45
fisheries/aquaculture	40
agriculture	30
tourism/recreation	5

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Recommended citation
BirdLife International (2025) Important Bird Area factsheet: Isonzo mouth, Cona island and Panzano Gulf (Italy). Downloaded from https://datazone.birdlife.org/site/factsheet/isonzo-mouth-cona-island-and-panzano-gulf-iba-italy on 11/01/2025.