Question

What is meant by migration? Why do birds migrate?
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Answer 1

Answer:

Migration is the seasonal movement of a complete population of animals from one area to another. Migration is usually a response to changes in temperature, food supply, or the amount of daylight, and is often undertaken for the purpose of breeding

Birds that nest in the Northern Hemisphere tend to migrate northward in the spring to take advantage of burgeoning insect populations, budding plants and an abundance of nesting locations. As winter approaches and the availability of insects and other food drops, the birds move south again.

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Answer 2

Answer:

Migration means movement from one region to another in response to seasonal changes.Birds migrate to escape from the inhospitable climate.