migrant adj : habitually moving from place to place especially in search of seasonal work; "appalled by the social conditions of migrant life"; "migratory workers" [syn: migratory] n : traveler who moves from one region or country to another [syn: migrator]

Migrant \Mi"grant\, a. [L. migrans, p. pr. of migrare. See Migrate.] Migratory. --Sir T. Browne. -- n. A migratory bird or other animal.

Migration is when animals move on an annual cycle. For example, caribou in the Arctic go south in winter and return in summer when it is warmer. Many birds migrate, such as geese and storks.

Migration is the travelling of long distances in search of a new habitat. The trigger for the migration may be local climate, local availability of food, or the season of the year. To be counted as a true migration, and not just a local dispersal, the movement should be an annual or seasonal event.

Many birds migrate south for the winter, and young Atlantic salmon leave the river of their birth when they have reached a few inches in size.

Many species in the sea have a daily migration. Plankton go up for the day where there is light, and down at night, where they are less easy to find. The many species which feed on them follow them up and down.

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