

Satellites observe the earth using electromagnetic waves such as light, infrared and microwaves.
It is possible to put small position locators (tiny radio beacons) on wild animals (called "tagging") so that their movements can be tracked by satellites specifically designed for this purpose.
Some migratory species have very large habitats.
Their migration paths and habitats frequently cross international boundaries and often include geographically remote and environmentally hostile regions.
Satellite technology offers an ideal opportunity to track and monitor the motions of migratory animals.