The numbers of Siberian migratory birds recorded decreased due to poaching and climate change, although. These birds are now began go back, but Sindh Wildlife Department or any authority have no any certificate the records of these evacuee birds.
The data of these migratory birds can not be release as yet, although their arrival started from October. A large number of exotic & colourful birds including Harriers, Kindfishers, Flamingos, Falcons, Geese, Swans, Cranes, Mallards, Waders, Cormorant, Mallards, White Ibis, Herons , Spoonbills, Egrets and Flamingos spend their migrated periods at the wetlands of Khyber Pakhtunkhwa, Balochistan, Punjab and Sindh. These birds also spent 4 to 5 months at Guddo Barrage, Drigh Lake, Lake Mancher , Haleji Lake, Khanjer Lake and adjacent areas of Indus Delta.
Lack of proper maintenance of the said Wetlands by the number of birds has decreased significantly. According to the wildlife experts now these beautiful birds migrating India and Iran instead Pakistan. During the decade of 80’s and 90’s more than 12 million and 670 species of migratory birds arrived at the said lakes from Indus Migrated Route No.4
They Birds comes here from Siberia for search of food through a distance of 4 thousand kilometers off the coast of Pakistan and, to descend rivers and wetlands in Pakistan. In the first phase, the birds stay at the lakes in Kazakhstan followed by different ranges of Karakoram in Pakistan.
From 1986 to 1990, the largest bird stay at the lake Haleji, where installed a Birds Ranking Station, put on the rings in foot of some birds. In the 90 decade there was 223 species & 2 million birds arrived at the Lake Haleji. However, the shortage of water into Lake Haleji and poaching has reduced the numbers of Birds, while numbers of birds in the Lake Khanjer also decreased. These birds also sold in the different area in Badin
The wildlife experts say that if there was not stop the illegal hunting of birds in Sindh the arrivals of the migratory birds will be turned off.