EVERYDAY SCIENCE

Detailed explanation-1: -Animal migration is the large-scale movement of a species from one place to another. Most species migrate during specific seasons, in search of food or water, or for mating reasons.

Detailed explanation-2: -internal migration: moving within a state, country, or continent. external migration: moving to a different state, country, or continent. emigration: leaving one country to move to another. immigration: moving into a new country.

Detailed explanation-3: -Animals and birds migrate from one place to another place in search of food, to avoid extreme weather conditions, or to breed.

Detailed explanation-4: -migration, in ethology, the regular, usually seasonal, movement of all or part of an animal population to and from a given area. Familiar migrants include many birds; hoofed animals, especially in East Africa and in the Arctic tundra; bats; whales and porpoises; seals; and fishes, such as salmon.