Migrate
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, as is the case with some fish.
The species that periodically migrate are called migratory, those that do not are called resident or
sedentary.
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. Flyways are routes that certain bird species take to migrate.
Whales, butterflies, moths, eels, 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
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