Question

what do you mean by migration

Answer 1

going from one place to other place is known as migration

Answer 2

Hey mate

Here is ur answer

Migration means when a bird, who can't suffer too much cold and where it's living currently has a very, very cold climate (like snowing, hail , too much rain etc..) and the bird can't tolerate it goes to the other direction (East, West, North and South.) where it is warm....And they come back when it is warm in their hometown ...