Bonal Lake is the second largest bird sanctuary after Ranganathittu in Mysore. Bonal Lake is located in Gulbarga and is 10 km from Shorapur. It attracts a lot of tourists. There are facilities of camping and jungle trails for travellers to enjoy the place around much better; this is an initiative by the government. This place attracts a lot of flamingos, egrets, aquatic fowls, white ibis, black ibis, brahminy duck, white-necked storks and many more.
The sanctuary is built on a water conservation tank by a ruler of Shorapur called Pam Naik in the 17th century. This is one of the largest tanks built in the drought-prone region and the same is mentioned in the autobiography of the British administrator of Shorapur, Meadows Taylor's, "The Story of My Life".