Bharatpur Sanctuary, also known as Keoladeo National Park, is a famous bird sanctuary located in Bharatpur, Rajasthan, India. It is a renowned avifauna sanctuary that attracts numerous bird species, including both resident and migratory birds.

Key Features of Bharatpur Sanctuary:
1. Rich Biodiversity: The sanctuary is spread over an area of 29 square kilometers and is home to more than 360 bird species. It is particularly famous for its large population of waterbirds.

2. Migratory Birds: Bharatpur Sanctuary is a crucial wintering ground for migratory birds, especially from Siberia and Central Asia. Every year, thousands of birds travel thousands of kilometers to seek refuge in the sanctuary's wetlands.

3. Ramsar Site: In recognition of its ecological importance, Bharatpur Sanctuary has been designated as a Ramsar site. Ramsar sites are wetlands of international importance, recognized for their biodiversity and the vital role they play in maintaining ecosystem services.

4. UNESCO World Heritage Site: The sanctuary was also declared a UNESCO World Heritage Site in 1985. This prestigious recognition highlights its global significance in terms of biodiversity conservation and bird habitat preservation.

5. Flora and Fauna: Apart from its avian population, the sanctuary is also home to a diverse range of plants and animals. It consists of wetlands, woodlands, grasslands, and shallow lakes, providing a suitable habitat for various species of flora and fauna.

6. Conservation Efforts: Bharatpur Sanctuary has been at the forefront of conservation efforts in India. It has implemented various measures to protect and preserve its unique ecosystem, including strict regulations and initiatives to control poaching and habitat degradation.

7. Bird Watching and Tourism: The sanctuary offers excellent opportunities for bird watching and wildlife tourism. Visitors can explore the park through cycle rickshaws or on foot, accompanied by trained guides who provide valuable insights into the avian species and their behaviors.

In conclusion, Bharatpur Sanctuary, also known as Keoladeo National Park, is a famous bird sanctuary located in Bharatpur, Rajasthan, India. Its rich avian biodiversity, recognition as a Ramsar site, and designation as a UNESCO World Heritage Site make it a popular destination for bird enthusiasts and nature lovers from around the world.