Question

One of the greatest mysteries of bird's life is travelling. Every year during autumn and early winter birds
travel from northern regions of Asia, Europe and America to the southern warmer lands. They make the
return journey again during spring and early summer. They are very punctual unless they are delayed by
bad weather. They face many dangers and hardships while travelling long distances through the air over
hills, forests, plains and larger stretches of water. Sometimes sudden storms arise and drive them far out
of course. Often they are blown right out to sea and are drowned in the wild waves. At night bright
lights attract and confuse the birds. They cannot fly at their fastest. The migration speed is usually from
48 to 64 km an hour and rarely exceeds 80

( v) which is one of the greatest mysteries of birds life​

Answer 1

Answer:

One of the greatest mystery of birds life is Travelling