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Year of most recent IBA criteria assessment: 2002

Populations of IBA trigger species

Species	Current IUCN Red List Category	Season	Year(s) of estimate	Population estimate	IBA Criteria Triggered
Great Crested Grebe Podiceps cristatus	LC	winter	1997-2001	1,236 individuals	C3
Black-necked Grebe Podiceps nigricollis	LC	winter	1997-2001	1,830 individuals	A4i, B1i, C3
Common Little Bittern Ixobrychus minutus	LC	breeding	2001	20-30 breeding pairs	C6
Black-crowned Night-heron Nycticorax nycticorax	LC	winter	1999	present	C6
Black-crowned Night-heron Nycticorax nycticorax	LC	breeding	1999	305-526 breeding pairs	C2, C6
Squacco Heron Ardeola ralloides	LC	breeding	2001	50-100 breeding pairs	C2, C6
Purple Heron Ardea purpurea	LC	breeding	2001	170-330 breeding pairs	C2, C6
Great White Egret Ardea alba	LC	winter	1997-2001	483 individuals	C6
Little Egret Egretta garzetta	LC	winter	1997-2001	791-1,284 individuals	C6
Little Egret Egretta garzetta	LC	breeding	2001	550-800 breeding pairs	C6
Pied Avocet Recurvirostra avosetta	LC	breeding	1999	100-200 breeding pairs	C6
Pied Avocet Recurvirostra avosetta	LC	winter	1997-2001	present	C6
Black-winged Stilt Himantopus himantopus	LC	breeding	2001	100-150 breeding pairs	C6
Dunlin Calidris alpina	LC	winter	1997-2001	3,917 individuals	A4i, B1i, C3
Little Tern Sternula albifrons	LC	passage	1991	2,000-3,000 individuals	A4i, B1i, C2
Little Tern Sternula albifrons	LC	breeding	1991	1,000-1,500 breeding pairs	C6
Common Tern Sterna hirundo	LC	breeding	2000-2001	158-310 breeding pairs	C6
Common Tern Sterna hirundo	LC	passage	2001	1,000-2,000 individuals	B1i, C2
Common Gull-billed Tern Gelochelidon nilotica	LC	breeding	2001	80-90 breeding pairs	C2, C6
Sandwich Tern Thalasseus sandvicensis	LC	passage	1999	1,000-2,000 individuals	B1i, C2
Sandwich Tern Thalasseus sandvicensis	LC	winter	1999	2 individuals	C6
Western Marsh-harrier Circus aeruginosus	LC	winter	1997-2001	56-73 individuals	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	1999	10-20 breeding pairs	C6
Montagu's Harrier Circus pygargus	LC	breeding	2001	13-18 breeding pairs	C6
A4iii Species group - waterbirds	n/a	passage	1999	26,000-37,000 individuals	A4iii, C4

Note: This table presents the IBA criteria triggered and the species that triggered then at the time of assessment, the current IUCN Red List category may vary from that which was in place at that time.

For more information about the IBA assessment process and criteria please click here

Protected Area	Designation	Area (ha)	Relationship with IBA	Overlap with IBA (ha)
Valle di Gorino	Ramsar Site, Wetland of International Importance	1,330	protected area is adjacent to site	0
Sacca di Goro; Po di Goro, Valle Dindona, Foce del Po di Volano	Site of Community Importance (Habitats Directive)	4,872	protected area is adjacent to site	0
Sacca di Goro; Po di Goro, Valle Dindona, Foce del Po di Volano	Special Protection Area (Birds Directive)	4,872	protected area is adjacent to site	0
Riserva naturale Bocche di Po	Riserva naturale regionale/provinciale	425	protected area contained by site	0
Parco regionale del Delta del Po (VE)	Parco naturale regionale/provinciale	12,129	protected area overlaps with site	0
Fiume Po da Stellata a Mesola e Cavo Napoleonico	Site of Community Importance (Habitats Directive)	3,140	protected area overlaps with site	0
Fiume Po da Stellata a Mesola e Cavo Napoleonico	Special Protection Area (Birds Directive)	3,140	protected area overlaps with site	0
Delta del Po: tratto terminale e delta veneto	Site of Community Importance (Habitats Directive)	25,362	protected area overlaps with site	16,891
Delta del Po	Regional Nature Park	59,118	protected area overlaps with site	0
Delta del Po	Special Protection Area (Birds Directive)	25,012	protected area overlaps with site	17,868
Cà Mello	Private Reserve	32	protected area contained by site	32
Bonello Giozzette	State Nature Reserve	0	protected area contained by site	0
Bonello Cornerona	State Nature Reserve	0	protected area contained by site	0
Bonello Cà Zuliani	State Nature Reserve	14	protected area contained by site	14
Bonello Bacucco	State Nature Reserve	0	protected area contained by site	0
Bocche di Po	State Nature Reserve	457	protected area contained by site	457
Biotopo Bonello	Private Reserve	35	protected area contained by site	35

IUCN Habitat	Habitat detail	Extent (% of site)
Forest	Alluvial and very wet forest	-
Wetlands (inland)	Standing freshwater, Standing brackish and salt water, Rivers and streams, Water fringe vegetation	-
Sea	Open Sea, Sea inlets and coastal features	-
Artificial/Terrestrial	Highly improved re-seeded landscapes, Arable land	-
Coastline	Tidal rivers & enclosed tidal waters, Sand dunes & beaches, Salt marshes, Mud flats & sand flats, Lagoons	-

For further information about the habitat classification please click here.

Land-use	Extent (% of site)
agriculture	-
fisheries/aquaculture	-
hunting	-
tourism/recreation	-
urban/industrial/transport	-
water management	-

For further information about the land use classification please click here.

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Recommended citation
BirdLife International (2022) Important Bird Areas factsheet: Po Delta. Downloaded from http://www.birdlife.org on 10/08/2022.