Migration refers to the movement of an organism or a group of organisms from its natural habitat to another place at a particular time every year. This term can be applied to both animals and humans. For example, seasonal migration is when animals move with each season or in response to labor or climate conditions. People who migrate can fall into several categories, such as emigrants, immigrants, or refugees. Reasons for migrating can include seeking better living conditions, job opportunities, or escaping from problems in their former home.