|Location||Falkland Islands (Malvinas)|
|Central coordinates||58o 50.00' West 52o 11.00' South|
|IBA criteria||A1, A2, A4i|
|Altitude||0 - 27m|
|Year of IBA assessment||2006|
Site description Bleaker Island and its outlying islands, off the southeastern coast of East Falkland, are low lying and rarely exceed 15 m except at Semaphore Hill north-east of the settlement. Coasts vary from low cliffs with sloping bedrock beaches to wide sandy bays and sheltered coves. Inland, Bleaker Island is mostly open heathland, with several ponds, some of which provide good habitats for waterfowl. There are extensive coastal beds of giant kelp. Ghost Island lies only 300 m from Bleaker Island, across a channel thick with kelp and it is not known if rats are present. It is likely that this island, with two-thirds of its area covered with tall Tussac, has not been grazed. Sandy Bay Island has not been stocked but the rodent status is unclear. The island lies 1 mile (1.5 km) off the Bleaker coast and is relatively high, at nearly 20 m in the centre, with a good coverage of Tussac grass. The greater distance from Bleaker Island makes infestation by rats across the channel unlikely, though possible. Halt Island lies at the mouth of Bleaker Island harbour, only 1.3 miles (2 km) from the settlement, making this an obvious choice for stocking and grazing in the past. Again, the rodent status is not known. Few details exist for the smaller Tussac-covered First, Second and Third Islands in the settlement bay, except that First Island is linked to Bleaker and it is possible to cross on foot at low tides. In November 2003 the resident manager reported that all three islands had rats.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Falkland Steamerduck Tachyeres brachypterus||breeding||2005||present [units unknown]||-||A2||Least Concern|
|Ruddy-headed Goose Chloephaga rubidiceps||breeding||2003||25 breeding pairs||unknown||A2||Least Concern|
|Gentoo Penguin Pygoscelis papua||breeding||2005||1,250 breeding pairs||unknown||A1||Near Threatened|
|Southern Rockhopper Penguin Eudyptes chrysocome||breeding||2005||720 breeding pairs||unknown||A1||Vulnerable|
|Magellanic Penguin Spheniscus magellanicus||unknown||2005||abundant [units unknown]||-||A1||Near Threatened|
|Southern Giant-petrel Macronectes giganteus||breeding||2005||170 breeding pairs||unknown||A1||Least Concern|
|Imperial Shag Phalacrocorax atriceps||breeding||2005||4,150 breeding pairs||unknown||A4i||Least Concern|
|Blackish Cinclodes Cinclodes antarcticus||breeding||2005||-||unknown||A2||Least Concern|
|White-bridled Finch Melanodera melanodera||unknown||2005||frequent [units unknown]||-||A2||Least Concern|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Bleaker Island||Sanctuary||870||is identical to site||870|
|IUCN habitat||Habitat detail||Extent (% of site)|
Other biodiversity The BSES recorded 79 species of flowering plants from 20 1-km squares; 53 were native, 26 were introduced species and four endemic: Lady’s Slipper Calceolari fothergillii, Clubmoss Cudweed Chevreulia lycopodioides, Vanilla Daisy Leucheria suaveolens and Coastal Nassauvia Nassauvia gaudichaudii. Interesting species of note included the Yellow Orchid Gavilea littoralis, Whitlowgrass Draba funiculosa, Californian Club-rush Schoenoplectus californicus and Gillie’s Dandelion Taraxacum gilliesii.
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Recommended citation BirdLife International (2013) Important Bird Areas factsheet: Bleaker Island Group. Downloaded from http://www.birdlife.org on 06/12/2013
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