Animal Migration(test)

Animal Migration
Migration is the periodic movement of an animal from the place where it has been living to a new area and its subsequent return journey to the original home. When animals migrate, it is usually to find abundant food and a good place to breed.
These seasonal movements of animals are one of the most incredible elements of nature.
Migrating animals usually use the same routes year after year--from generation to generation. Land animals cross mountains, rivers, and vast tracks of land. Birds, bats, and insects fly long distances, sometimes crossing entire continents or oceans. Swimming animals frequently migrate half way across the world.
The movement of migratory animals usually corresponds with seasonal changes. Many animals migrate to northern regions during summer months. The long summer days in the northernmost portions of the world ensure a good food supply. As fall and colder weather approaches, many animals migrate south to find warm winter weather and available food.
Some animals migrate annually with an outward and a homeward journey made in a single year. Some animals' patterns of migration are linked to weather patterns---their movements are dependent on rainfall and the availability of green vegetation. A few animals take several years to complete their migratory cycles.
Many scientists view animal migration as an adaptation. Animals that have learned to move to optimal environments are the ones who have survived to continue their species.
Tracking migration

For years scientists have been tracking animals and the ways they migrate. Many have done this for research, some have done this to help animals and monitor them.

RadioTracking:Tracking an animal by radio invovles two devices. A transmitter attached to the animals sends out a signal in the form of radio waves, just as a radio station does.

Satellite tracking:Receivers can be place in placed in Earth-orbiting satellites as well as in airplanes and trucks. Networks, or groups, of satellites are used to track animals. Each satellite in a network picks up electronic signals from a transmitter on an animal.

Why tracking is important

Electronic tracking tags are giving scientists a complete, accurate picture of migration patterns.
Technologies for tracking animals may also help people whose work or recreation
affects animals

Technologies for tracking animals may also help people whose work or recreation affects animals.
Why tracking is important
Electronic tracking tags are giving scientists a complete, accurate picture of migration patterns.
Technologies for tracking animals may also help people whose work or recreation
affects animals
Technologies for tracking animals may also help people whose work or recreation affects animals.