Description
During winter most of the Norrbysjön lake is covered in ice, but where Motala ström meets Norrbysjön the water is ususally open year round. During this period large flocks of Blishøne, Stor Skallesluger, Gråand, Troldand, Knopsvane, Canadagås, Sølvmåge and Hvinand can be found. Often numbering in the hundreds. Within these flocks rarer wintering birds like Toppet Lappedykker, Vibe, Sangsvane, dabbling ducks, Lille Lappedykker , Blisgås, Stær, Taffeland, and Skarv can be spotted. The large amounts of wintering birds attract birds of prey like Havørn, Musvåge, and Blå Kærhøg.
When the ice melts large amounts of pipits, larks, geese, Sangsvane, and sometimes Pibesvane, use the fields around the lake as feeding grounds. The lake is usually filled with many dabbling ducks, gulls and terns. Husbyängarna are often flodded, and usually hold wading birds like Enkeltbekkasin, Rødben, Stor Præstekrave, Vibe, and Hvidklire. The reedbeds around the lake are now filled with birds. Some rare birds who are sometimes found around the lakes are Rørdrum, Savisanger, Skægmejse and Drosselrørsanger. Some rare terns and gulls like Dværgmåge and Sortterne pass the lake during the spring migration.
Some rarer breeding birds at the lake are Drosselrørsanger, Rørdrum, Agerhøne, Lille Flagspætte, Engsnarre and Isfugl. Norrbysjön is and excellent area for night active birds. Around the lake Engsnarre, Vagtel, Græshoppesanger, Nattergal, Flodsanger, Kærsanger can often be heard at the lake.
During autumn large amounts of geese start to visit the lake again. Many more passerine birds can be found on the fields. Among these Snespurv, Lapværling and Rødstrubet Piber are often found. Hundreds of Hjejle can often be found on the fields. Sometimes marine ducks like Sortand and Fløjlsand stay at the lake.
Details
Access
Parking can bee done at Brunneby musteri, and att Ruda bro. At Brunneby mustri you get a good view of Husbyängen. From Brunneby musteri you can walk to the bridge at Kungs norrby. Where you can see wintering birds along motala ström (mainly Lille Lappedykker). From Ruda bro you can walk to Norrbysjön and get a good view. At Sjöbacka you can also get a good view of the eastern part of the lake, although parking is quite difficult.

