Migration - Types Of Migration, Directions Of Migration, Migration Pathways, Advantages Of Migration, Navigation
animals
Migration is the act of moving from one place to another, and is often associated with seasonal movements of animals between their breeding territory and a wintering range. This activity is most readily observed in birds, but has been documented in many other animals as well, including insects, fish, whales, and other mammals. Migration is a complex behavior that involves timing, navigation and other survival skills.
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The migration behaviors of different species of animals can be categorized as either complete, partial, differential, or irruptive. In complete migration, all of the members of a population will travel away from their breeding habitat at the end of that season, often to a wintering site hundreds or even thousands of kilometers away. The arctic tern (Sterna paradisaea) is an example of a complete m…
Migration is usually thought of as a southward movement in autumn and a return northward in the spring. These migrations, termed latitudinal migrations, are the most common type, but there are several other directions in which migratory animals may travel. A mirror image of latitudinal migration, often called austral migration, occurs in the Southern Hemisphere. These migrations tend to be shorter…
Migratory animals travel along the same general routes each year. Several common "flyways" are used by North American birds on their southward journey. The most commonly used path includes a 496-682 mi (800-1,100 m) flight across the Gulf of Mexico. In order to survive this arduous journey, birds must store extra energy in the form of fat. All along the migration route, but particula…
Perhaps the most remarkable aspect of migration is the navigational skills employed by the animals. Birds such as the albatross (Diomedea sp.) and lesser golden plover (Pluvialis dominica) travel hundreds of miles over the featureless open ocean, yet unerringly home in on the same breeding grounds year after year. Salmon (Oncorynchus sp.) migrate upstream from the sea to the very same freshwater s…
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10 months ago
sank you very match
10 months ago
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about 1 year ago
francis
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