Description
Lake Sommen is quite deep and most of the lake is ice-free all-winter. During this period large amounts of Gulönd, Hvinönd and Toppgoði winter in Sommen. Sometimes in the hundreds. Among these Skúfönd, Hnúðsvanur, Álft, Bleshæna, and Stormmáfur can often be found. The lake is also home to quite a few rarer wintering birds like Glitbrúsi, Toppönd, Gullörn, Hrafnsönd, Korpönd, Bláþyrill, Lómur and Hettumáfur.
During the spring migration marine ducks can be found in the lake. At the same time Lómur, and Glitbrúsi, arrive at the lake. Glitbrúsi breeds in the lake while Lómur feeds in the lake and breeds in small neighbouring lakes. The rare Svalbrúsi has been seen. Sommen archipelago hosts large colonies of Sílaþerna, Stormmáfur, Hettumáfur, Silfurmáfur, Gráhegri and Dílaskarfur. Among these some rare birds like Sílamáfur, and Kría can be seen.
The large decidous forests around sommen especially on Torpön host plenty of quite rare birds like: Peðgrípur, Stubbspæta, Hnotbrjótur, and Eyrugla. Around Sommen there is also old conifer forests around which support large populations of woodpeckers. Gauktíta, Grænspæta, Svartspæta, Stubbspæta, Barkspæta (very rare), Barrspæta and Drumbspæta (extinct in the area) have all been recorded. Other otherwise rare forrest birds found here are: Jarpi Þiður, Orri (Rocks mosse), and Hnotbrjótur.
During the autumn birds can be seen migrating through the lake. Most common are the doves, finches, terns, and waders. At Rocks mosse Orri and Þiður breed. At Visskvarn there are rapids where Fossbúi, and Straumerla 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.

