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 Liska, Veliki ronac, Gluvara, Ćubasta patka, Labud grbac, Kanadska guska, Srebrnasti galeb and Patka dupljašica can be found. Often numbering in the hundreds. Within these flocks rarer wintering birds like Ćubasti gnjurac, Vivak, Veliki labud, dabbling ducks, Mali gnjurac , Lisasta guska, Čvorak, Riđoglava patka, and Veliki vranac can be spotted. The large amounts of wintering birds attract birds of prey like Belorepan, Mišar, and Poljska eja.
When the ice melts large amounts of pipits, larks, geese, Veliki labud, and sometimes Mali labud, 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 Mala šljuka, Crvenonogi sprudnik, Žalar blatarić, Vivak, and Krivokljuni sprudnik. The reedbeds around the lake are now filled with birds. Some rare birds who are sometimes found around the lakes are Vodeni bik, Obični cvrčić, Brkata senica and Veliki trstenjak. Some rare terns and gulls like Mali galeb and Crna čigra pass the lake during the spring migration.
Some rarer breeding birds at the lake are Veliki trstenjak, Vodeni bik, Jarebica, Mali detlić, Prdavac and Vodomar. Norrbysjön is and excellent area for night active birds. Around the lake Prdavac, Prepelica, Cvrčić tršćar, Veliki slavuj, Cvrčić potočar, Trstenjak mlakar 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 Snežna strnadica, Strnadica ostrugašica and Riđogrla trepteljka are often found. Hundreds of Zlatni vivak can often be found on the fields. Sometimes marine ducks like Crni turpan and Baršunasti turpan 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 Mali gnjurac). 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.

