Descrizione
More than 230 species of birds have been recorded in and around Østensjøvannet. In summer the lake hosts a large colony of Gabbiano comune, as well as populations of Svasso maggiore, Folaga, Gallinella d'acqua and Moretta. You can also find Migliarino di palude, Cannaiola and the occational Luì verde here.
It is a popular area for recreation, and there is a path all around the lake with plenty of good viewpoints. The path brings you quite close to the water's edge. There is also a bird hide on the west side of the lake, which provies good views of the central parts.
During spring and autumn the lake is used as a stopover by numerous species, such as Mestolone, Svasso cornuto and waders.
In winter, large flocks of Germano reale stay at the lake, with the occational Codone and Fischione thrown in. Various geese and Folaga are also known to winter here. As a bonus, encountering Codibugnolo is not uncommon during the colder months.
Dettagli
Accesso
There is a parking site south of the lake. The area can also be reached by bus (Abildsø) and the subway (Skullerudåsen, Bøler). The paths around the lake are mostly prepared for biking, but walking around the lake (with plenty of stops) won't take more than about 2 hours (4,5 km).

