Ranganathittu bird sanctuary is the largest bird sanctuary in Karnataka, India. It is located at 3 km from the historic town of Srirangapatna, Mandya District in Karnataka State of India. The city of Mysore is about 13 km and the city of Bangalore is about 125 km from Ranganathittu.

The bird sanctuary is about 40 acres in area and on the banks of river Kaveri backwaters formed from the KRS dam. It is a nesting and breeding center for many kinds of birds. There are many beautiful birds in the area, the most common ones are spoon bills, white ibises, egrets, herons and painted storks. You will see lines of birds sitting on the tree branches at the other side of the river. You will also see many birds sitting on the rocks in the river. Birds are there all day, but there are more of them to enjoy especially in the morning and evening hours. You can also see crocodiles in the water. There is a boat ride which you can take to watch the birds more closely. Boat ride lasts only about 20 minutes, it is still very enjoyable and you get to see the birds up-close. 

The bird sanctuary can be visited throughout the year. The park is open from 8:30 AM to 6:00 PM. There is a nominal entry fee for the park, also similar fee for the boat ride. There is a parking lot with many spots. The area is maintained very well, there are lot of trees and hence you will be walking around in the shaded area. There are many covered picnic spots with benches as well. You may take your picnic food to enjoy. There is also a vegetarian restaurant which serves many items including both South Indian and North Indian dishes.

Ranganathittu bird sanctuary is a must visit if you are in the area. Though as a visitor, you only need a couple of hours to see the place, you can relax here all day. It is a very nice place to plan for a picnic and enjoy with family and friends. Both kids and adults will enjoy the variety of birds, crocodiles, boat ride and the scenery and the best thing is any time of the year is good to visit.