Read the following passage carefully and answer the questions given below it your answer should he based on the facts mentioned in the passage1: every year during autumn and early winter, birds travel from their breeding places in the northern regions of asia, Europe and America to the southern lands. Migrating birds do not fly at high speed. They usually travel in flocks. The information on migration has come from ringing young and adult birds. A light band of metal or plastic is tied with the leg of the bird. The band bears a number date identification of the mark is requested to return the ring. This given a clue to the direction and the locality to which the birds is migrated. Birds migrate in order to escape the butter cold and limited food supply. The other reason is when the water freezes, to birds, fish and sea foods are difficult to obtain. The migration of birds is during
1. Winter season
2. Autumn season
3. Summer season
4. Autumn and early winter
Most of the birds migrate from their breeding places in all over the world the northern regions of Asia, Europe and America to the warmer southern lands. The southern lands northern regions of Asia, Europe and America to the warmer southern lands. During their travel the birds the band that was put in the leg of the bird. The band which bears a number date identification and the address to which the card to be returned.