Delayed monsoon, change in climatic and environmental patterns in Europe and Siberia are the reasons behind the fall in the number of migratory birds visiting the Sultanpur National Park this year. Most of these winged visitors are from Europe and Siberia.
According to the forest department records, only the Common Teal has made an appearance this year.
"There are approximately 20 Common Teals in the park. Every year this species is the first to arrive, but this time it arrived two weeks late," said Suresh Bharadwaj, in-charge of education interpretation centre, Sultanpur National Park.
Last year during the migratory period from September to March, the park was host to nearly 67 bird species from Siberia, Europe and Central Asia. Last September, the park recorded the arrival of 50,000 birds of 13 species.
Officials claim that the entire migratory cycle has been disturbed due to climatic shifts.
"The world is going through a major climatic and environmental change. It is not due to delay in monsoon here, but there has been no snowfall in Siberia and Europe too," added Bharadwaj.
These birds fly to warmer regions in search of food and shelter.
"The birds migrate to warm regions to escape extreme cold and for food," said KS Khatkar, deputy forest officer.
"Mostly water birds come here. They start arriving from September and stay till March 15," added Khatkar.
The park is now closed for visitors and will open on October 2. "We keep the park closed from May to September as it is the breeding season for the resident birds. We started this rule in 2010," said Khatkar.
The Sultanpur National Park is known for its migratory birds. The park has three large watch towers specially erected for a panoramic view of birds.
The park, on the Gurgaon-Farrukhnagar road, is 15 kilometre from Gurgaon and 50 kilometre away from Delhi.