migration

An instance of moving to live in another place for a while.

Seasonal moving of animals, as mammals, birds or fish, especially between breeding and non-breeding areas.

Many of these classic methods are still used, with some modern improvements. For example, with the aid of special microphones and automated sound detection software, ornithologists recently reported […] that pine siskins (Spinus pinus) undergo an irregular, nomadic type of nocturnal migration.

Movement in general.

The migration of lead from a can to the food inside it can cause lead poisoning.

Instance of changing a platform from an environment to another one.

The movement of cells in particular directions to specific locations.