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The site was identified as important in 2007 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
Tundra Swan Cygnus columbianus	LC	winter	2001-2006	238 individuals	A4i, B1i, B2, C2
Greylag Goose Anser anser	LC	winter	2001-2006	1,950 individuals	B1i, C3
Gadwall Mareca strepera	LC	breeding	2006	48 breeding pairs	B2
Common Crane Grus grus	LC	breeding	2006	present	C6
Eurasian Bittern Botaurus stellaris	LC	breeding	2004-2006	1 males	C6
Western Marsh-harrier Circus aeruginosus	LC	breeding	2005	14 breeding pairs	C6
Hen Harrier Circus cyaneus	LC	winter	1984-1989	20 individuals	C6
A4iii Species group - waterbirds	n/a	winter	2001-2006	28,557 individuals	A4iii, C4

1. The current IUCN Red List category. The category at the time of the IBA criteria assessment (2007) may differ.

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

State (condition of the trigger species' populations)
Species	Reference	Actual	Units	% remaining	Result
Tundra Swan Cygnus columbianus	67	238	individuals	100	favourable
Greylag Goose Anser anser	1,050	1,950	individuals	100	favourable
Gadwall Mareca strepera	60	48	breeding pairs	80	near favourable
Eurasian Bittern Botaurus stellaris	2	1	males	50	unfavourable
Common Tern Sterna hirundo	155	26	breeding pairs	17	very unfavourable
Western Marsh-harrier Circus aeruginosus	19	14	breeding pairs	74	near favourable

Pressure (threats to the trigger species and/or their habitats)
Threat	Timing	Scope	Severity	Result
Pollution	happening now	some of area/population (10-49%)	slow but significant deterioration	medium
Transportation and service corridors	likely in short term (within 4 years)	small area/few individuals (<10%)	moderate to rapid deterioration	low
Natural system modifications	happening now	small area/few individuals (<10%)	slow but significant deterioration	low
Agricultural expansion and intensification	happening now	small area/few individuals (<10%)	slow but significant deterioration	low

Response (conservation actions taken for the trigger species and/or their habitats)
Protected areas	Management plan	Other action	Result
Whole area of site (>90%) covered by appropriate conservation designation	A management plan exists but it is out of date or not comprehensive	Some limited conservation initiatives are in place	medium

Year	Protected Area	Designation	% overlap with IBA
-	Mid Yare Valley	RSPB Reserve	15
-	Havergate Marshes	Site of Special Scientific Interest (SSSI)	-
1948	Horsey	Nature Reserve	7
1958	Hickling Broad	National Nature Reserve	11
1958	Bure Marshes	National Nature Reserve	8
1976	Broadland	Ramsar Site, Wetland of International Importance	86
1976	Mid Yare Valley	Nature Reserve	13
1983	Broad Fen, Dilham	Site of Special Scientific Interest (UK)	<1
1984	Calthorpe Broad	Site of Special Scientific Interest (UK)	1
1984	Alderfen Broad	Site of Special Scientific Interest (UK)	<1
1985	Decoy Carr, Acle	Site of Special Scientific Interest (UK)	1
1985	Crostwick Marsh	Site of Special Scientific Interest (UK)	<1
1985	Limpenhoe Meadows	Site of Special Scientific Interest (UK)	<1
1985	Smallburgh Fen	Site of Special Scientific Interest (UK)	<1
1985	Poplar Farm Meadows, Langley	Site of Special Scientific Interest (UK)	<1
1986	Upton Broad & Marshes	Site of Special Scientific Interest (UK)	3
1986	Burgh Common and Muckfleet Marshes	Site of Special Scientific Interest (UK)	2
1986	Shallam Dyke Marshes, Thurne	Site of Special Scientific Interest (UK)	1
1986	Sprat's Water and Marshes, Carlton Colville	Site of Special Scientific Interest (UK)	1
1986	Stanley and Alder Carrs, Aldeby	Site of Special Scientific Interest (UK)	1
1986	Priory Meadows, Hickling	Site of Special Scientific Interest (UK)	<1
1986	Hall Farm Fen, Hemsby	Site of Special Scientific Interest (UK)	<1
1986	Ducan's Marsh, Claxton	Site of Special Scientific Interest (UK)	<1
1988	Broads	National Park	100
1988	Upper Thurne Broads and Marshes	Site of Special Scientific Interest (UK)	22
1988	Yare Broads and Marshes	Site of Special Scientific Interest (UK)	14
1988	Geldeston Meadows	Site of Special Scientific Interest (UK)	<1
1989	Ant Broads and Marshes	Site of Special Scientific Interest (UK)	14
1989	Catfield Fen	National Nature Reserve	<1
1990	Barnby Broad & Marshes	Site of Special Scientific Interest (UK)	3
1990	Ludham - Potter Heigham Marshes	Site of Special Scientific Interest (UK)	1
1990	Hardley Flood	Site of Special Scientific Interest (UK)	1
1991	Bure Broads and Marshes	Site of Special Scientific Interest (UK)	14
1993	Damgate Marshes, Acle	Site of Special Scientific Interest (UK)	<1
1994	Broadland	Special Protection Area (Birds Directive)	100
1994	Ant Broads & Marshes	National Nature Reserve	3
1995	Halvergate Marshes	Site of Special Scientific Interest (UK)	13
1995	Ludham Marshes	National Nature Reserve	1
1995	Martham Broad	National Nature Reserve	1
1996	The Broads	Site of Community Importance (Habitats Directive)	100
1996	Breydon Water	Ramsar Site, Wetland of International Importance	1
1997	Mid Yare	National Nature Reserve	14
1997	Cantley Marshes	Site of Special Scientific Interest (UK)	5
1997	Calthorpe Broad	National Nature Reserve	1
2006	Sutton Fen	Nature Reserve	3
2006	How Hill	National Nature Reserve	2

Habitat1	Habitat detail	% of IBA
Grassland	Mesophile grasslands, Humid grasslands	major (>10)
Wetlands (inland)	Standing freshwater, Rivers and streams, Water fringe vegetation, Fens, transition mires and springs	major (>10)
Forest	Broadleaved deciduous woodland, Alluvial and very wet forest	minor (<10)
Shrubland	Scrub	minor (<10)

1. IUCN Habitat classification.

Land use	% of IBA
agriculture	-
nature conservation and research	-
tourism/recreation	-

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Recommended citation
BirdLife International (2024) Important Bird Area factsheet: Broadland (United Kingdom). Downloaded from https://datazone.birdlife.org/site/factsheet/broadland-iba-united-kingdom on 23/11/2024.