Manyas, also known as Bird Lake, is located on the borders of Balikesir. There are different views about manyas and the formation of several lakes around it, and the lakes are in a decayed area surrounded by mountains. It is most plausible that alluvial swings flowing in this area are formed when they clog their own beds. Lake Manyas is 20 kilometers long, 14 kilometers wide. Its deepest point is about 4 meters, the average depth is about 1-2 meters. The area it occupies is about 16,800 hectares.
The area, including the lake, was declared bird paradise national park in 1959. It’s known in the world as a bird sanctuary. The national park received a Class A European Diploma from the Council of Europe in 1975 due to bird wealth and successful conservation. More than 200 bird species are observed in the wetland scrubbing area, from spoon to fisherman, from thatched nightingale to pelicans, from swans to accidents, incubating, wintering and migrating. Between March and September and October, it’s the best time for bird watching. The lake is a resting area for the white pelican, the small swan and the steeptail during the migration period. Paddy, spoonmaker, night heron, small cormorants and spurred maidens are some of the bird species that breed in the lake. Snakes, cranes, bows and carp are the most common fish species. The lake and its environs have been around the 1st century Since 1981. has the status of a natural protected area.
Tatlı su gölü olan Manyas, Kocaçay ve Sığırcı dereleri ile besleniyor. Sığırcı’nın oluşturduğu deltada bitki örtüsü ve hayvan popülasyonu çok zengin. Kocaçay’ın son yıllarda gölü besleyememesi ve Karacabey Ovası’na su verilmesi yüzünden yaz aylarında göl seviyesi düşüyor. Civardaki sanayi kuruluşlarının arıtma tesislerini çalıştırmaması yüzünden Kuş Cenneti de ne yazık ki tehdit altında.