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Migration of winter bird (ENGLISH/BANGLA)

[ বাংলায় পড়তে নিচের দিকে স্ক্রল করুন ]

Migration of winter bird

To achieve food breeding and optimal environment, animals go from one place to another and later called migration.When the snow falls in winter in the Winter-chief country, the lack of food.As a result, those birds go to a nearby country to survive.Winter birds travel through thousands of miles in search of food and favorable environment.Later, when the environment crisis cut, he returned to the land again.
In winter, the birds came from the septicipation of Siberia and other winter-chief countries in Bangladesh .At this time, these birds made the house at home, lay eggs, increase the dynasty. These birds again went to their country if the arrival of the summer.Mother's birds are also with their children leave our country in their country.

----------Bangladesh National parks----------
----------বাংলাদেশের জাতীয় উদ্যানসমূহ--------

শীতের পাখির মাইগ্রেশন

খাদ্য প্রজনন ও অনুকূল পরিবেশ প্রাপ্তির লক্ষ্যে প্রানীদের একস্থান থেকে অন্য স্থানে গমন এবং পরবর্তীতে পুনরায় সেখানে ফিরে আসাই হলো মাইগ্রেশন।শীতপ্রধান দেশে শীতকালে বরফ পড়লে পাখিদের খাদ্যের অভাব দেখা দেয়৷ফলে সেসব পাখিরা বেঁচে থাকার জন্য কাছাকাছি কোন দেশে চলে যায়।শীতের পাখিরা খাদ্য ও অনুকূল পরিবেশের সন্ধানে হাজার হাজার মাইল পাড়ি দিয়ে অন্য স্থানে গমন করে।পরবর্তীতে পরিবেশের সংকট কেটে গেলে আবার নিজের আবাস ভূমিতে ফিরে যায়।
শীতকালে বাংলাদেশে সাইবেরিয়া ও অন্যান্য শীতপ্রধান দেশ থেকে অভিপ্রয়াণ করে পাখিরা বাংলাদেশে চলে আসে।এ সময় এ পাখিরা এ দেশে বাসা বানায়,ডিম পাড়ে,বংশ বৃদ্ধি করে।পরবর্তীতে গ্রীষ্মের আগমন ঘটলে এ পাখিরা আবার নিজ দেশে চলে যায়।মা পাখিদের সাথে এদের বাচ্চারাও আমাদের দেশ ছেড়ে নিজ দেশে চলে যায়।

-----'ডারউইনিজম' ও ডারউইনিজম তও্ব কি?----
What is 'Darwinism'and Darwinism theory?

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