Description
Lake Sommen is quite deep and most of the lake is ice-free all-winter. During this period large amounts of голем северен нуркач, четириока патка and цуцулест нуркач winter in Sommen. Sometimes in the hundreds. Among these цуцулест кожувар, црвеноклун лебед, жолтоклун лебед, црна лиска, and обичен галеб can often be found. The lake is also home to quite a few rarer wintering birds like белец, среден северен нуркач, златен орел, Common Scoter, белокрила црнка, рибарче, мал морски нуркач and езерски галеб.
During the spring migration marine ducks can be found in the lake. At the same time мал морски нуркач, and белец, arrive at the lake. белец breeds in the lake while мал морски нуркач feeds in the lake and breeds in small neighbouring lakes. The rare White-billed Diver has been seen. Sommen archipelago hosts large colonies of речна чигра, обичен галеб, езерски галеб, Сребренест галеб, сива чапја and голем корморан. Among these some rare birds like мал црногрб галеб, and Arctic Tern can be seen.
The large decidous forests around sommen especially on Torpön host plenty of quite rare birds like: црвеногушесто муварче, мал клукајдрвец, Лешникарка, and ушест був. Around Sommen there is also old conifer forests around which support large populations of woodpeckers. вртивратка, зелен клукајдрвец, црн клукајдрвец, мал клукајдрвец, Тропски клукајдрвец (very rare), голем клукајдрвец and белогрб клукајдрвец (extinct in the area) have all been recorded. Other otherwise rare forrest birds found here are: лештарка голем тетреб, мал тетреб (Rocks mosse), and Лешникарка.
During the autumn birds can be seen migrating through the lake. Most common are the doves, finches, terns, and waders. At Rocks mosse мал тетреб and голем тетреб breed. At Visskvarn there are rapids where воден ќос, and планинска тресиопашка can be seen.
Details
Access
The area is quite vast, and has got many places to get a good view of the lake. The area is quite mountanous and a walk can be straining. Click on a P in the map to get directions to that point.

