Sultanpur National Park is a bird paradise for bird watchers. The park is famous for its migratory as well as resident birds. Migratory species reach here after covering incredible distances, from their home lands in Europe, Siberia and Central Asia become inhabitable due to cold temperature, snow covered ground and frozen lakes. Migratory birds start arriving in the park in September. Birds use the park as a resting place until the following March-April. During summer and monsoon months the park is inhabited by many local bird species. A total of around 250 bird species have been reported in the park.