Sultanpur National Park is the national park in Haryana that is known for its bird sanctuary.

Introduction:
- Sultanpur National Park is located in Gurgaon district of Haryana, India.
- It was established in 1971 and declared a national park in 1991.
- The park covers an area of 1.43 square kilometers and is situated on the Gurgaon-Farukh Nagar road.
- The park is known for its diverse bird species and is a popular destination for birdwatchers and nature enthusiasts.

Bird Sanctuary:
- Sultanpur National Park is primarily known for its bird sanctuary.
- The park attracts a large number of migratory birds during the winter season, making it a paradise for birdwatchers.
- The wetland ecosystem of the park provides an ideal habitat for these migratory birds.
- Some of the common migratory birds that can be seen in the park include Siberian cranes, greater flamingos, ruff, black-winged stilt, common teal, pintail, and many more.
- These birds travel thousands of kilometers from their breeding grounds in Siberia, Europe, and Central Asia to spend the winter months in Sultanpur.

Flora and Fauna:
- Apart from the bird sanctuary, Sultanpur National Park is also home to a variety of flora and fauna.
- The park is surrounded by a dense forest consisting of trees like Acacia, Neem, and Ber.
- The wetland ecosystem supports a rich variety of aquatic plants such as lotus, water lilies, and duckweeds.
- The park is also home to several species of mammals, reptiles, and amphibians including blackbuck, nilgai, Indian porcupine, Indian bullfrog, and many more.

Conservation Efforts:
- Sultanpur National Park has played an important role in the conservation of bird species.
- The park has been successful in creating a favorable environment for migratory birds and has become an important breeding ground for resident birds as well.
- Conservation measures like habitat restoration, provision of artificial nests, and protection from poaching have been implemented in the park.
- The park also conducts awareness programs and educates visitors about the importance of bird conservation and the need to protect their habitats.

Conclusion:
- Sultanpur National Park in Haryana is known for its bird sanctuary, which attracts a large number of migratory birds during the winter season.
- The park's wetland ecosystem provides an ideal habitat for these birds, making it a popular destination for birdwatchers and nature enthusiasts.
- The park also supports a variety of flora and fauna and has played an important role in the conservation of bird species.