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 nokikana, isokoskelo, sinisorsa, tukkasotka, kyhmyjoutsen, kanadanhanhi, harmaalokki and telkkä can be found. Often numbering in the hundreds. Within these flocks rarer wintering birds like silkkiuikku, töyhtöhyyppä, laulujoutsen, dabbling ducks, pikku-uikku , tundrahanhi, kottarainen, punasotka, and merimetso can be spotted. The large amounts of wintering birds attract birds of prey like merikotka, hiirihaukka, and sinisuohaukka.
When the ice melts large amounts of pipits, larks, geese, laulujoutsen, and sometimes pikkujoutsen, 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 jänkäkurppa, punajalkaviklo, tylli, töyhtöhyyppä, and valkoviklo. The reedbeds around the lake are now filled with birds. Some rare birds who are sometimes found around the lakes are kaulushaikara, ruokosirkkalintu, viiksitimali and rastaskerttunen. Some rare terns and gulls like pikkulokki and mustatiira pass the lake during the spring migration.
Some rarer breeding birds at the lake are rastaskerttunen, kaulushaikara, peltopyy, pikkutikka, ruisrääkkä and kuningaskalastaja. Norrbysjön is and excellent area for night active birds. Around the lake ruisrääkkä, viiriäinen, pensassirkkalintu, satakieli, viitasirkkalintu, luhtakerttunen 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 pulmunen, lapinsirkku and lapinkirvinen are often found. Hundreds of kapustarinta can often be found on the fields. Sometimes marine ducks like mustalintu and pilkkasiipi 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 pikku-uikku). 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.

