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Migration occurs when living things move from one biome to another. In most cases organisms migrate to avoid local shortages of food, usually caused by winter. Animals may also migrate to a certain location to breed. Bird migration is common. The longest known migration of a bird is that of the Arctic Tern, which migrates from the Arctic to the Antarctic and back each year.
Whales, butterflies, moths, and lemmings are also known to migrate. The periodic migration of plagues of locusts is a phenomenon recorded since Biblical times.
Human migrations also happen on a large scale, in history and in modern times. Seasonal human migration is very common in agricultural cycles.
In archaeology, migrationism describes an interpretative framework where all major cultural changes are explained by large-scale movements of people.
See also
- Bird migration
- Human migration
- Migrant
- Nomadic peopleCommunities of nomadic people move from place to place, rather than settling down in one location. Many cultures have been traditionally nomadic, but nomadic behaviour is increasingly rare in industrialised countries. Typically there are two kinds of noma
- Seasonal human migration
- Population geneticsPopulation genetics is the study of the distribution of and change in allele frequencies under the influence of the four evolutionary forces: natural selection, genetic drift, mutation and migration. It also takes account of population subdivision and pop
- Population transferPopulation transfer is a term referring to a policy by which a state forces the movement of a large group of people out of a region, invariably on the basis of ethnicity or religion. By contrast, individuals and smaller groups of their politically effecti
Population geneticsPopulation genetics is the study of the distribution of and change in allele frequencies under the influence of the four evolutionary forces: natural selection, genetic drift, mutation and migration. It also takes account of population subdivision and pop Evolutionary biologyEvolutionary biology is a subfield of biology concerned with the origin and descent of species, as well as their change over time, i. their evolution. One who studies evolutionary biology is known as an evolutionary biologist or less frequently evolutioni
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