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 čierna, potápač veľký, kačica divá, chochlačka vrkočatá, labuť veľká, bernikľa veľká, čajka striebristá and hlaholka severská can be found. Often numbering in the hundreds. Within these flocks rarer wintering birds like potápka chochlatá, cibík chochlatý, labuť spevavá, dabbling ducks, potápka malá , hus bieločelá, škorec obyčajný, chochlačka sivá, and kormorán veľký can be spotted. The large amounts of wintering birds attract birds of prey like orliak morský, myšiak hôrny, and kaňa sivá.
When the ice melts large amounts of pipits, larks, geese, labuť spevavá, 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 močiarnička tichá, kalužiak červenonohý, kulík piesočný, cibík chochlatý, and kalužiak sivý. The reedbeds around the lake are now filled with birds. Some rare birds who are sometimes found around the lakes are bučiak veľký, svrčiak slávikovitý, fúzatka trstinová and trsteniarik veľký. Some rare terns and gulls like čajka malá and čorík čierny pass the lake during the spring migration.
Some rarer breeding birds at the lake are trsteniarik veľký, bučiak veľký, jarabica poľná, ďateľ malý, chrapkáč poľný and rybárik riečny. Norrbysjön is and excellent area for night active birds. Around the lake chrapkáč poľný, prepelica poľná, svrčiak zelenkavý, slávik veľký, svrčiak riečny, trsteniarik obyčajný 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 snehuľka severská, ostrohárka severská and ľabtuška červenohrdlá are often found. Hundreds of kulík zlatý can often be found on the fields. Sometimes marine ducks like turpan čierny and turpan tmavý 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.

