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close| Location | Sweden, Västerbotten |
| Central coordinates | 20o 1.17' East 63o 25.32' North |
| IBA criteria | B1ii, B2, B3, C3 |
| Area | 396 ha |
| Altitude | 0 - 5m |
| Year of IBA assessment | 2000 |
Ornithological information This is an important site for breeding seabirds.
Site description A rocky island located 20 km off the Swedish coast. There is no vegetation, and numerous blocks of stone of varying size form breeding sites for auks.
Populations of IBA trigger species
| Species | Season | Period | Population estimate | Quality of estimate | IBA Criteria | IUCN Category |
|---|---|---|---|---|---|---|
| Common Guillemot Uria aalge | breeding | 1996 | 200-1,000 breeding pairs | medium | B1ii, C3 | Least Concern |
| Razorbill Alca torda | breeding | 1996 | 2,000-4,000 breeding pairs | medium | B1ii, B3, C3 | Least Concern |
| Black Guillemot Cepphus grylle | breeding | 1996 | 350-500 breeding pairs | medium | B1ii, B2 | Least Concern |
Protected areas
| Protected area | Designation | Area (ha) | Relationship with IBA | Overlap with IBA (ha) | |
|---|---|---|---|---|---|
| Bonden | Nature Reserve | 396 | is identical to site | 396 |
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| Bonden - SE0810002 | Birds Directive | 396 | is identical to site | 396 |
Habitats
| IUCN habitat | Habitat detail | Extent (% of site) |
|---|---|---|
| Sea | Open Sea; Sea inlets and coastal features | - |
| Coastline | Sea cliffs and rocky shores | - |
Land use
| Land-use | Extent (% of site) |
|---|---|
| nature conservation and research | 100% |
Management considerations Unknown numbers of unauthorized visitors land on the island during the protected period (1 April to 1 July). Regular auk counts are undertaken.
Protection status National High International High5 ha of IBA covered by Nature Reserve (Bonden, 400 ha). 5 ha of IBA covered by Special Protection Area (400 ha).
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Bonden island. Downloaded from http://www.birdlife.org on 25/05/2013
To provide new information to update this factsheet or to correct any errors, please email BirdLife
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