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Thousands of islands form this archipelago to the east and north-east of Stockholm where Lake Malaren enters the Baltic Sea, and many areas are protected as nature reserves and bird sanctuaries.
One island, Angso, has been a national park since 1909. This island in the northern part of the archipelago has many meadows some of which are managed by traditional methods and display a fine range of flowers in spring and summer.
Stora Nassa is a group of 400 closely spaced rocky islets with little vegetation except birch and juniper scrub on the largest and wet grassland on others.
The Lilla Nassa group has virtually no vegetation but the Gilloga islands have abundant cover and Svenska Hogarna has juniper scrub, grassland and heather.
 Notable Species
Waterfowl include Tufted Duck, Eider and Velvet Scoter, Long-tailed Duck and Goosander. Waders such as Redshank and Ruddy Turnstone are present in summer and other breeders include Black Grouse and Short-eared Owl.
Birds you can see here include:
Black-throated Diver, Great Crested Grebe, Great Cormorant, Grey Heron, Mute Swan, Greylag Goose, Canada Goose, Dark-bellied Brent Goose, Eurasian Wigeon, Mallard, Northern Pintail, Tufted Duck, Greater Scaup, Common Eider, Long-tailed Duck, Velvet Scoter, Common Goldeneye, Red-breasted Merganser, Goosander, White-tailed Eagle, Eurasian Sparrowhawk, Common Buzzard, Osprey, Black Grouse, Eurasian Oystercatcher, Common Redshank, Ruddy Turnstone, Arctic Skua, Black-headed Gull, Common Gull, Lesser Black-backed Gull, Herring Gull, Great Black-backed Gull, Caspian Tern, Arctic Tern, Common Guillemot, Razorbill, Common Woodpigeon, Short-eared Owl, Common Swift, Black Woodpecker, Green Woodpecker, Great Spotted Woodpecker, Three-toed Woodpecker, Sand Martin, Barn Swallow, Northern House Martin, Tree Pipit, Rock Pipit, White Wagtail, Common Wren, Eurasian Robin, Common Redstart, Northern Wheatear, Eurasian Blackbird, Fieldfare, Mistle Thrush, Lesser Whitethroat, Common Whitethroat, Blackcap, Willow Warbler, Goldcrest, European Pied Flycatcher, Crested Tit, Blue Tit, Great Tit, Eurasian Nuthatch, Common Treecreeper, Common Jay, Common Magpie, Eurasian Jackdaw, Hooded Crow, Northern Raven, House Sparrow, Eurasian Tree Sparrow, Chaffinch, European Greenfinch, Eurasian Siskin, Yellowhammer
 Other Wildlife
 Site Information
 History and Use
The entire area is popular with tourists and boating and watersports in general are increasing and pose a threat to the birdlife.
 Areas of Interest
 Access and Facilities
The Bullero Nature Reserve and Langskar Nature Reserves lie only 35km from Stockholm and can be reached via Stavsnas. Access to some areas is restricted during the breeding season but full details can be obtained from the field centre on Bullero.
Some of the outer islands are more difficult to reach and should not be unduly disturbed.
 Contact Details
 External Links
Content and images originally posted by Steve