Lake Çöl (Desert), a brackish water lake located 80 km from Ankara city center, between Haymana and Balâ districts, is of great importance especially for birds in spring and summer. This lake is a breeding ground for many bird species and a wintering place for some birds such as flamingos and white-footed geese. Birds such as white-headed duck and ruddy shelduck make great use of this lake in the years when the water level is high. In recent years, the water level of the lake has been declining and unfortunately some species are known to have disappeared from the region. The lake is also home to endangered butterfly species such as the lulworth skipper.