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Zugunruhe involves increased activity towards and after dusk with changes in the normal sleep pattern. [2] "In accordance with their inherited calendars, birds get an urge to move. When migratory birds are held in captivity, they hop about, flutter their wings and flit from perch to perch just as birds of the same species are migrating in the wild.
Monarch butterflies roosting on migration in Texas. Insect migration is the seasonal movement of insects, particularly those by species of dragonflies, beetles, butterflies and moths. The distance can vary with species and in most cases, these movements involve large numbers of individuals.
A related phenomenon called "abmigration" involves birds from one region joining similar birds from a different breeding region in the common winter grounds and then migrating back along with the new population. This is especially common in some waterfowl, which shift from one flyway to another. [93]
Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migration in ecology. It is found in all major animal groups, including birds , mammals , fish , reptiles , amphibians, insects , and crustaceans .
In information theory, linguistics, and computer science, the Levenshtein distance is a string metric for measuring the difference between two sequences. The Levenshtein distance between two words is the minimum number of single-character edits (insertions, deletions or substitutions) required to change one word into the other.
A black-throated blue warbler perches on shrubs in Maine in this photo taken by Logan Parker. The warblers migrate from the Northeast to areas in and around the Caribbean and back each year.
The Earth has entered another period of rapid climate change as a consequence of human's emissions of greenhouse gases. [10] Since the early 20th century, the global air and sea surface temperature has increased about 0.8 °C (1.4 °F), with about two-thirds of the increase occurring since 1980. [ 11 ]
Geographic mobility is the measure of how populations and goods move over time. Geographic mobility, population mobility , or more simply mobility is also a statistic that measures migration within a population.