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 lyska černá, morčák velký, kachna divoká, polák chocholačka, labuť velká, berneška velká, racek stříbřitý and hohol severní can be found. Often numbering in the hundreds. Within these flocks rarer wintering birds like potápka roháč, čejka chocholatá, labuť zpěvná, dabbling ducks, potápka malá , husa běločelá, špaček obecný, polák velký, and kormorán velký can be spotted. The large amounts of wintering birds attract birds of prey like orel mořský, káně lesní, and moták pilich.
When the ice melts large amounts of pipits, larks, geese, labuť zpěvná, and sometimes labuť malá, 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 slučka malá, vodouš rudonohý, kulík písečný, čejka chocholatá, and vodouš šedý. The reedbeds around the lake are now filled with birds. Some rare birds who are sometimes found around the lakes are bukač velký, cvrčilka slavíková, sýkořice vousatá and rákosník velký. Some rare terns and gulls like racek malý and rybák černý pass the lake during the spring migration.
Some rarer breeding birds at the lake are rákosník velký, bukač velký, koroptev polní, strakapoud malý, chřástal polní and ledňáček říční. Norrbysjön is and excellent area for night active birds. Around the lake chřástal polní, křepelka polní, cvrčilka zelená, slavík tmavý, cvrčilka říční, rákosník zpěvný 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 sněhule severní, strnad severní and linduška rudokrká are often found. Hundreds of kulík zlatý can often be found on the fields. Sometimes marine ducks like turpan černý and turpan hnědý 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 potápka malá). 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.

