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True migration is typically a recurring annual or seasonal movement, or a major life-stage-related change in habitat; local dispersal and irregular irruptions are not usually classified as true migration.
Animal migration is the relatively long-distance movement of animals, usually occurring seasonally. It is found across major animal groups, including birds, mammals, fish, reptiles, amphibians, insects, and crustaceans. Migration may be triggered by seasonal changes, climate, food availability, breeding, or major changes in habitat. To qualify as true migration rather than local dispersal or an irregular population irruption, movement generally must recur annually or seasonally, or represent a major habitat change during the animal’s life. Migration is commonly characterized by persistent, relatively direct movement produced by the animal’s own efforts or active movement on a vehicle, accompanied by a temporary reduction in behaviors that keep it in one place. It may be obligate or facultative, and can be complete, partial, or differential depending on whether all, some, or particular groups of individuals migrate.
True migration is typically a recurring annual or seasonal movement, or a major life-stage-related change in habitat; local dispersal and irregular irruptions are not usually classified as true migration.
Migration involves persistent, relatively direct movement over a greater spatial and temporal scale than normal daily activity.
Migration may be obligate or facultative, and may be complete, partial, or differential according to which individuals migrate.
Major causes of migration include seasonal climate changes, food availability, reproduction, mating, and habitat changes.
The relatively long-distance movement of individual animals, usually on a seasonal basis.
A recurring seasonal or annual movement, or a major habitat change during an animal’s life, rather than simple local dispersal or irruption.
Persistent, relatively direct movement produced by an animal’s locomotory efforts or active embarkation on a vehicle, involving temporary suppression of station-keeping behavior.
Migration that individuals of a species must undertake.
Migration that individuals may choose to undertake or avoid.
A pattern in which all individuals in a population or species migrate.
A pattern in which some individuals migrate while others remain in place.
A pattern in which migratory behavior differs according to characteristics such as age or sex.
An irregular, non-cyclical movement or sudden population expansion caused by pressures such as famine or local overpopulation.
“Can you explain what "True migration is typically a recurring annual or seasonal movement, or a major life-stage-related change in habitat; local dispersal and irregular irruptions are not usually classified as true migration." means in simple terms?”