With the full fledged advent of winter, the 100 year old Sirpur lake on the outskirts of Indore City is again inhabited by migratory birds. These birds come here from different regions and are more than 6000 in numbers. This wetland hosts birds from as far as Europe and Siberia during winter season every year. The main species of birds that have flocked here this time are shell ducks, kingfisher, cranes, hen and storks from Afghanistan, Pakistan, Srilanka and Maldives. A peculiar species of shell duck migrates from Nepal and Tibet and arrives here in the first week of January. These ducks always migrate in couples. Blue-purple moorhen arrive here as complete families and even change their colour to black as the temperature dips. Spotbill ducks (known as HImalayan birds), openbill stork, fission tailed jacana and black winged stilt can be watched closely around this wetland and even their mutual conversations echoing here can be captured. This is the perfect time for ornithologists to visit this destination. The Indore Municipal Corporation looks after this lake and has developed a small sanctuary for the migratory birds. They have also planted several fruit trees and grass varieties in anticipation of the arrival of thousands of birds. The Sirpur Lake official said that these numbers are increasing every year and the municipal corporation plans to turn it into a round the year sanctuary in coming years.