Migratory birds, a part of our ecology Birds that migrate to other less cold countries to escape the overwintering condition are called migratory birds. Bangladesh is among the countries where migratory birds come from areas especially from Russia, Europe and Himalayan range.
The number of migratory birds is not small at all. Studies have shown that in Asia and Europe, about five to 600 species of migratory birds are seen every year. Some of these birds travel as far as 35000 km in search of a warm place.
They travel long distances together in large flocks. The countries from which they come have temperatures so low that they cannot survive there.
In addition food shortage is also evident in winter in these regions. Because of continuous snowfall no grass or trees can grow there in that frozen land. When the ice in their area begins to melt again in the spring, they return to their native land.
Barishal, Sirajgonj, Sunamgonj and Nilphamari are among those regions where these migratory birds are seen. Besides in Nijhum Dip, Dublar Char Kutubdia these guest birds are also spotted. The lake in the Mirpur Zoo and Jahangirnagar University Lake are bustling with birds chirping every winter season.
About 25 species of migratory birds can be found in Jahangirnagar University Lake alone. The university known for its natural beauty gets its life back with the arrival of these migratory birds. About 9% of the total migratory birds coming to our country get placed here.
Because of their coming to our country for a long time these birds have also got their native names. Among them the most famous are Pati Sorali, Jolpipi, Manik Jor, Kolai,Choto Nokh khonjona, Chitatupi, Sonajong, Bataron, Lenja, Horial, Chokhachokhi, Rangamukhi, Pantamukhi etc. Most of the migratory birds coming to our country are ducks. They live in and around watery places.
The notable names of these ducks include Bali Has, Lenja Hash, Patari Hash, Boikal Hash, Giria Hash, Raj Hash, Dhuti Hash, Baro Vuti Hash, Chiti Hash, Boumoni Hash etc. According to official estimates Bangladesh is supposed to have twelve sanctuaries for birds but it has not been accurately fulfilled yet and they are not well developed.
According to section 26 of Bangladesh Wildlife Act 1974, Hunting and killing of birds is a punishable offence. But hunting and selling of guest birds is still predominant in our country. Winter has come and birds have already come to our country.
The concern is that the environment is what it used to be. Big trees are being cut down and reservoirs are being filled up. Necessary steps should be taken to protect the bird as well as our ecology is the expectation, now.
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