One of the finest bird parks in the world, Keoladeo Ghana National Park is a reserve that offers protection to faunal species as well, though there is no doubt that this is  primarily a bird sanctuary. Once a shooting preserve of the royal family of Bharatpur, the marshy swamplands were created by a maharaja who diverted water from irrigation canals to flood the low depression creating a permament home for waterfowl. Today 120 species of birds nest at Keoladeo, and the heronry is blieved to be the best in the world.
A paradise for the avian world, and the pilgrimage for the bird lovers, it was known as the best duck shooting resort in the British empire. But was declared a reserve for birds in 1956 and later upgraded to National Park. UNESCO has listed it as a world heritage site.

The geographical location is ideal as it is on the main North - South avian route of India. Although small in size, 29 sq. km. only, it boasts to house more than 375 species of beautiful birds, and more than 132 of them breed inside the Keoladeo Ghana National Park and nearly every year new ones are added to the list. The sanctuary not only attracts birds from India but also from places like Europe, Siberia, China and Tibet.

As the monsoons arrive birds from every part of the country start pouring into the park. Migratory water-fowls, including the pride of Keoladeo Siberian Cranes form the indispensable part of Park. The water-fowls visit the park in millions during the month of October. The most noticeable water-fowl coming to the park are barheaded and greyleg geese. The ducks spotted here are pintail, common teal, ruddy shelduck, mallard, widgeon, shoveler,common shelduck, red crested pochard, gadwall etc. predatory birds like imperial eagle, steppe and tawny eagle spotted eagle, marsh harrier and laggar falcon are attracted towards the park completing the avian food chain of the ecosystem. Some of them like short-toed eagle, lesser spotted eagle and shikra are the residents of Park.

About 11 sq. km. area of the park is covered with water the remaining portion is rich with Kingfisher, Red Vented and white cheeked Bulbuls, Babblers, Quails, Partridges, Sunbirds, Sparrows and Parakeets which live in bushes and burrows. The year round activity of the winged beauties has made the park a pilgrimage for bird lovers and an omithologists delight.

The animal populace also show their presence although they are thoroughly dominated by feathers, wings and beaks. The animals include the Black Buck, Sambhar - the largest Indian Antelope, Spotted deer, and Nigais. Pythons can also be observed at some places lazing in the sun.

Vehicles are only permitted upto Shanti Kutir inside the park. The Electra Van of forest department can be engaged in the sanctuary, although the best way to explore the park is on foot or bicycles which are available on hire. Cycle rickshaws can also be hired.