Question

Write a short note on migration.

Answer 1

Migration :

1. It is defined as the movement of a large group of organisms from one place to another in terms of the search for food shelter, and better opportunities to settle, either permanently or temporarily.
2. It is mainly used to define the regular and periodic movement of the population away from or back to their places of origin like many migratory birds and other mammals.
3. Animals usually travel long distances in groups for breeding.
4. Human migration is defined as relatively permanent settlement across territorial or international boundaries.

Factors affecting migration:

1. External factors such as climate, natural disasters, drought, shelter or loss of habitat, and unavailability of food may cause the migration of animals for better survival.
2. Bird migration is the seasonal movement of birds in terms of the search for breeding grounds and wintering grounds to raise their young ones.